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Finding the Fourth Proportional to 82,709.70, 124,064.55 and 41,151.30

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Solution

The fourth proportional to 82,709.70, 124,064.55 and 41,151.30 is: 61,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,709.70 : 124,064.55 = 41,151.30 : x
  2. Step 2: Convert to fraction form
    82,709.70/124,064.55 = 41,151.30/x
  3. Step 3: Cross multiply
    82,709.70x = 124,064.55 × 41,151.30
  4. Step 4: Simplify right side
    82,709.70x = 5,105,417,516.42
  5. Step 5: Solve for x
    x = 5,105,417,516.42/82,709.70
  6. Step 6: Final answer
    x = 61,726.95

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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.