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Finding the Fourth Proportional to 60,759.54, 91,139.04 and 16,390.78

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Solution

The fourth proportional to 60,759.54, 91,139.04 and 16,390.78 is: 24,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,759.54 : 91,139.04 = 16,390.78 : x
  2. Step 2: Convert to fraction form
    60,759.54/91,139.04 = 16,390.78/x
  3. Step 3: Cross multiply
    60,759.54x = 91,139.04 × 16,390.78
  4. Step 4: Simplify right side
    60,759.54x = 1,493,839,726.20
  5. Step 5: Solve for x
    x = 1,493,839,726.20/60,759.54
  6. Step 6: Final answer
    x = 24,586.09

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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.