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Finding the Fourth Proportional to 613,285.48, 915,264.89 and 572,677.12

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Solution

The fourth proportional to 613,285.48, 915,264.89 and 572,677.12 is: 854,661.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,285.48 : 915,264.89 = 572,677.12 : x
  2. Step 2: Convert to fraction form
    613,285.48/915,264.89 = 572,677.12/x
  3. Step 3: Cross multiply
    613,285.48x = 915,264.89 × 572,677.12
  4. Step 4: Simplify right side
    613,285.48x = 524,151,261,242.32
  5. Step 5: Solve for x
    x = 524,151,261,242.32/613,285.48
  6. Step 6: Final answer
    x = 854,661.13

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.