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Finding the Fourth Proportional to 69,049.71, 103,574.58 and 21,672.12

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Solution

The fourth proportional to 69,049.71, 103,574.58 and 21,672.12 is: 32,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,049.71 : 103,574.58 = 21,672.12 : x
  2. Step 2: Convert to fraction form
    69,049.71/103,574.58 = 21,672.12/x
  3. Step 3: Cross multiply
    69,049.71x = 103,574.58 × 21,672.12
  4. Step 4: Simplify right side
    69,049.71x = 2,244,680,726.71
  5. Step 5: Solve for x
    x = 2,244,680,726.71/69,049.71
  6. Step 6: Final answer
    x = 32,508.18

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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.