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Finding the Fourth Proportional to 541,728.10, 812,592.15 and 261,792.10

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Solution

The fourth proportional to 541,728.10, 812,592.15 and 261,792.10 is: 392,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,728.10 : 812,592.15 = 261,792.10 : x
  2. Step 2: Convert to fraction form
    541,728.10/812,592.15 = 261,792.10/x
  3. Step 3: Cross multiply
    541,728.10x = 812,592.15 × 261,792.10
  4. Step 4: Simplify right side
    541,728.10x = 212,730,205,392.02
  5. Step 5: Solve for x
    x = 212,730,205,392.02/541,728.10
  6. Step 6: Final answer
    x = 392,688.15

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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.