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Finding the Fourth Proportional to 15,123.65, 22,687.90 and 6,361.07

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Solution

The fourth proportional to 15,123.65, 22,687.90 and 6,361.07 is: 9,542.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.65 : 22,687.90 = 6,361.07 : x
  2. Step 2: Convert to fraction form
    15,123.65/22,687.90 = 6,361.07/x
  3. Step 3: Cross multiply
    15,123.65x = 22,687.90 × 6,361.07
  4. Step 4: Simplify right side
    15,123.65x = 144,319,190.71
  5. Step 5: Solve for x
    x = 144,319,190.71/15,123.65
  6. Step 6: Final answer
    x = 9,542.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.