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Finding the Fourth Proportional to 22,639.10, 31,239.93 and 12,565.23

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Solution

The fourth proportional to 22,639.10, 31,239.93 and 12,565.23 is: 17,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,639.10 : 31,239.93 = 12,565.23 : x
  2. Step 2: Convert to fraction form
    22,639.10/31,239.93 = 12,565.23/x
  3. Step 3: Cross multiply
    22,639.10x = 31,239.93 × 12,565.23
  4. Step 4: Simplify right side
    22,639.10x = 392,536,764.92
  5. Step 5: Solve for x
    x = 392,536,764.92/22,639.10
  6. Step 6: Final answer
    x = 17,338.89

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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.