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Finding the Fourth Proportional to 889,665.60, 1,334,498.40 and 866,337.60

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Solution

The fourth proportional to 889,665.60, 1,334,498.40 and 866,337.60 is: 1,299,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,665.60 : 1,334,498.40 = 866,337.60 : x
  2. Step 2: Convert to fraction form
    889,665.60/1,334,498.40 = 866,337.60/x
  3. Step 3: Cross multiply
    889,665.60x = 1,334,498.40 × 866,337.60
  4. Step 4: Simplify right side
    889,665.60x = 1,156,126,141,059.84
  5. Step 5: Solve for x
    x = 1,156,126,141,059.84/889,665.60
  6. Step 6: Final answer
    x = 1,299,506.40

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Double scale
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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.