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Finding the Fourth Proportional to 103,691.80, 155,559.66 and 58,734.28

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Solution

The fourth proportional to 103,691.80, 155,559.66 and 58,734.28 is: 88,113.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691.80 : 155,559.66 = 58,734.28 : x
  2. Step 2: Convert to fraction form
    103,691.80/155,559.66 = 58,734.28/x
  3. Step 3: Cross multiply
    103,691.80x = 155,559.66 × 58,734.28
  4. Step 4: Simplify right side
    103,691.80x = 9,136,684,627.14
  5. Step 5: Solve for x
    x = 9,136,684,627.14/103,691.80
  6. Step 6: Final answer
    x = 88,113.86

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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.