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Finding the Fourth Proportional to 22,715.58, 31,347.86 and 12,644.13

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Solution

The fourth proportional to 22,715.58, 31,347.86 and 12,644.13 is: 17,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.58 : 31,347.86 = 12,644.13 : x
  2. Step 2: Convert to fraction form
    22,715.58/31,347.86 = 12,644.13/x
  3. Step 3: Cross multiply
    22,715.58x = 31,347.86 × 12,644.13
  4. Step 4: Simplify right side
    22,715.58x = 396,366,353.84
  5. Step 5: Solve for x
    x = 396,366,353.84/22,715.58
  6. Step 6: Final answer
    x = 17,449.10

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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.