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Finding the Fourth Proportional to 559,874,648.40, 839,811,972.60 and 519,059,979.60

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Solution

The fourth proportional to 559,874,648.40, 839,811,972.60 and 519,059,979.60 is: 778,589,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,874,648.40 : 839,811,972.60 = 519,059,979.60 : x
  2. Step 2: Convert to fraction form
    559,874,648.40/839,811,972.60 = 519,059,979.60/x
  3. Step 3: Cross multiply
    559,874,648.40x = 839,811,972.60 × 519,059,979.60
  4. Step 4: Simplify right side
    559,874,648.40x = 435,912,785,365,591,808
  5. Step 5: Solve for x
    x = 435,912,785,365,591,808/559,874,648.40
  6. Step 6: Final answer
    x = 778,589,969.40

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Half scale
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Double scale
Find fourth proportional to 559,874,649.40, 839,811,974.10 and 519,059,980.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.