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Finding the Fourth Proportional to 31,865.60, 43,972.08 and 17,716.16

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Solution

The fourth proportional to 31,865.60, 43,972.08 and 17,716.16 is: 24,446.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,865.60 : 43,972.08 = 17,716.16 : x
  2. Step 2: Convert to fraction form
    31,865.60/43,972.08 = 17,716.16/x
  3. Step 3: Cross multiply
    31,865.60x = 43,972.08 × 17,716.16
  4. Step 4: Simplify right side
    31,865.60x = 779,016,404.81
  5. Step 5: Solve for x
    x = 779,016,404.81/31,865.60
  6. Step 6: Final answer
    x = 24,446.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.