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Finding the Fourth Proportional to 99,915.88, 149,693.34 and 62,458.12

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Solution

The fourth proportional to 99,915.88, 149,693.34 and 62,458.12 is: 93,574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,915.88 : 149,693.34 = 62,458.12 : x
  2. Step 2: Convert to fraction form
    99,915.88/149,693.34 = 62,458.12/x
  3. Step 3: Cross multiply
    99,915.88x = 149,693.34 × 62,458.12
  4. Step 4: Simplify right side
    99,915.88x = 9,349,564,592.92
  5. Step 5: Solve for x
    x = 9,349,564,592.92/99,915.88
  6. Step 6: Final answer
    x = 93,574.36

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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.