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Finding the Fourth Proportional to 387,901.16, 580,607.16 and 207,535.38

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Solution

The fourth proportional to 387,901.16, 580,607.16 and 207,535.38 is: 310,637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,901.16 : 580,607.16 = 207,535.38 : x
  2. Step 2: Convert to fraction form
    387,901.16/580,607.16 = 207,535.38/x
  3. Step 3: Cross multiply
    387,901.16x = 580,607.16 × 207,535.38
  4. Step 4: Simplify right side
    387,901.16x = 120,496,527,581.32
  5. Step 5: Solve for x
    x = 120,496,527,581.32/387,901.16
  6. Step 6: Final answer
    x = 310,637.19

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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.