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Finding the Fourth Proportional to 106,515.30, 159,712.20 and 39,957.60

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Solution

The fourth proportional to 106,515.30, 159,712.20 and 39,957.60 is: 59,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,515.30 : 159,712.20 = 39,957.60 : x
  2. Step 2: Convert to fraction form
    106,515.30/159,712.20 = 39,957.60/x
  3. Step 3: Cross multiply
    106,515.30x = 159,712.20 × 39,957.60
  4. Step 4: Simplify right side
    106,515.30x = 6,381,716,202.72
  5. Step 5: Solve for x
    x = 6,381,716,202.72/106,515.30
  6. Step 6: Final answer
    x = 59,913.61

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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.