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Finding the Fourth Proportional to 22,661, 31,272.18 and 12,725

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Solution

The fourth proportional to 22,661, 31,272.18 and 12,725 is: 17,560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,661 : 31,272.18 = 12,725 : x
  2. Step 2: Convert to fraction form
    22,661/31,272.18 = 12,725/x
  3. Step 3: Cross multiply
    22,661x = 31,272.18 × 12,725
  4. Step 4: Simplify right side
    22,661x = 397,938,490.50
  5. Step 5: Solve for x
    x = 397,938,490.50/22,661
  6. Step 6: Final answer
    x = 17,560.50

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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.