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Finding the Fourth Proportional to 724,878.92, 1,087,041.50 and 238,448

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Solution

The fourth proportional to 724,878.92, 1,087,041.50 and 238,448 is: 357,580.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,878.92 : 1,087,041.50 = 238,448 : x
  2. Step 2: Convert to fraction form
    724,878.92/1,087,041.50 = 238,448/x
  3. Step 3: Cross multiply
    724,878.92x = 1,087,041.50 × 238,448
  4. Step 4: Simplify right side
    724,878.92x = 259,202,871,592
  5. Step 5: Solve for x
    x = 259,202,871,592/724,878.92
  6. Step 6: Final answer
    x = 357,580.92

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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.