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Finding the Fourth Proportional to 103,760.40, 155,282.20 and 62,237.20

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Solution

The fourth proportional to 103,760.40, 155,282.20 and 62,237.20 is: 93,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,760.40 : 155,282.20 = 62,237.20 : x
  2. Step 2: Convert to fraction form
    103,760.40/155,282.20 = 62,237.20/x
  3. Step 3: Cross multiply
    103,760.40x = 155,282.20 × 62,237.20
  4. Step 4: Simplify right side
    103,760.40x = 9,664,329,337.84
  5. Step 5: Solve for x
    x = 9,664,329,337.84/103,760.40
  6. Step 6: Final answer
    x = 93,140.83

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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.