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Finding the Fourth Proportional to 519,459.60, 779,189.40 and 164,501.40

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Solution

The fourth proportional to 519,459.60, 779,189.40 and 164,501.40 is: 246,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,459.60 : 779,189.40 = 164,501.40 : x
  2. Step 2: Convert to fraction form
    519,459.60/779,189.40 = 164,501.40/x
  3. Step 3: Cross multiply
    519,459.60x = 779,189.40 × 164,501.40
  4. Step 4: Simplify right side
    519,459.60x = 128,177,747,165.16
  5. Step 5: Solve for x
    x = 128,177,747,165.16/519,459.60
  6. Step 6: Final answer
    x = 246,752.10

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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.