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Finding the Fourth Proportional to 78,542.47, 108,390.47 and 44,553.25

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Solution

The fourth proportional to 78,542.47, 108,390.47 and 44,553.25 is: 61,484.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,542.47 : 108,390.47 = 44,553.25 : x
  2. Step 2: Convert to fraction form
    78,542.47/108,390.47 = 44,553.25/x
  3. Step 3: Cross multiply
    78,542.47x = 108,390.47 × 44,553.25
  4. Step 4: Simplify right side
    78,542.47x = 4,829,147,707.53
  5. Step 5: Solve for x
    x = 4,829,147,707.53/78,542.47
  6. Step 6: Final answer
    x = 61,484.54

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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.