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Finding the Fourth Proportional to 28,446.39, 39,256.02 and 15,871.14

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Solution

The fourth proportional to 28,446.39, 39,256.02 and 15,871.14 is: 21,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.39 : 39,256.02 = 15,871.14 : x
  2. Step 2: Convert to fraction form
    28,446.39/39,256.02 = 15,871.14/x
  3. Step 3: Cross multiply
    28,446.39x = 39,256.02 × 15,871.14
  4. Step 4: Simplify right side
    28,446.39x = 623,037,789.26
  5. Step 5: Solve for x
    x = 623,037,789.26/28,446.39
  6. Step 6: Final answer
    x = 21,902.17

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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.