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Finding the Fourth Proportional to 438,915.68, 605,716.08 and 247,937.12

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Solution

The fourth proportional to 438,915.68, 605,716.08 and 247,937.12 is: 342,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,915.68 : 605,716.08 = 247,937.12 : x
  2. Step 2: Convert to fraction form
    438,915.68/605,716.08 = 247,937.12/x
  3. Step 3: Cross multiply
    438,915.68x = 605,716.08 × 247,937.12
  4. Step 4: Simplify right side
    438,915.68x = 150,179,500,412.89
  5. Step 5: Solve for x
    x = 150,179,500,412.89/438,915.68
  6. Step 6: Final answer
    x = 342,160.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.