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Finding the Fourth Proportional to 123,151.51, 169,949.11 and 66,562.71

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Solution

The fourth proportional to 123,151.51, 169,949.11 and 66,562.71 is: 91,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,151.51 : 169,949.11 = 66,562.71 : x
  2. Step 2: Convert to fraction form
    123,151.51/169,949.11 = 66,562.71/x
  3. Step 3: Cross multiply
    123,151.51x = 169,949.11 × 66,562.71
  4. Step 4: Simplify right side
    123,151.51x = 11,312,273,323.69
  5. Step 5: Solve for x
    x = 11,312,273,323.69/123,151.51
  6. Step 6: Final answer
    x = 91,856.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.