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Finding the Fourth Proportional to 103,999.92, 155,904.21 and 56,545.68

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Solution

The fourth proportional to 103,999.92, 155,904.21 and 56,545.68 is: 84,766.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,999.92 : 155,904.21 = 56,545.68 : x
  2. Step 2: Convert to fraction form
    103,999.92/155,904.21 = 56,545.68/x
  3. Step 3: Cross multiply
    103,999.92x = 155,904.21 × 56,545.68
  4. Step 4: Simplify right side
    103,999.92x = 8,815,709,569.31
  5. Step 5: Solve for x
    x = 8,815,709,569.31/103,999.92
  6. Step 6: Final answer
    x = 84,766.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.