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Finding the Fourth Proportional to 123,949.83, 170,854.47 and 113,652.71

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Solution

The fourth proportional to 123,949.83, 170,854.47 and 113,652.71 is: 156,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,949.83 : 170,854.47 = 113,652.71 : x
  2. Step 2: Convert to fraction form
    123,949.83/170,854.47 = 113,652.71/x
  3. Step 3: Cross multiply
    123,949.83x = 170,854.47 × 113,652.71
  4. Step 4: Simplify right side
    123,949.83x = 19,418,072,676.84
  5. Step 5: Solve for x
    x = 19,418,072,676.84/123,949.83
  6. Step 6: Final answer
    x = 156,660.74

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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.