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Finding the Fourth Proportional to 60,728.80, 91,082.86 and 16,345.66

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Solution

The fourth proportional to 60,728.80, 91,082.86 and 16,345.66 is: 24,515.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,728.80 : 91,082.86 = 16,345.66 : x
  2. Step 2: Convert to fraction form
    60,728.80/91,082.86 = 16,345.66/x
  3. Step 3: Cross multiply
    60,728.80x = 91,082.86 × 16,345.66
  4. Step 4: Simplify right side
    60,728.80x = 1,488,809,461.39
  5. Step 5: Solve for x
    x = 1,488,809,461.39/60,728.80
  6. Step 6: Final answer
    x = 24,515.71

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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.