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Finding the Fourth Proportional to 59,686.28, 89,535.28 and 21,745.88

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Solution

The fourth proportional to 59,686.28, 89,535.28 and 21,745.88 is: 32,620.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,686.28 : 89,535.28 = 21,745.88 : x
  2. Step 2: Convert to fraction form
    59,686.28/89,535.28 = 21,745.88/x
  3. Step 3: Cross multiply
    59,686.28x = 89,535.28 × 21,745.88
  4. Step 4: Simplify right side
    59,686.28x = 1,947,023,454.65
  5. Step 5: Solve for x
    x = 1,947,023,454.65/59,686.28
  6. Step 6: Final answer
    x = 32,620.96

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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.