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Finding the Fourth Proportional to 124,485.39, 185,934.33 and 112,620.87

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Solution

The fourth proportional to 124,485.39, 185,934.33 and 112,620.87 is: 168,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,485.39 : 185,934.33 = 112,620.87 : x
  2. Step 2: Convert to fraction form
    124,485.39/185,934.33 = 112,620.87/x
  3. Step 3: Cross multiply
    124,485.39x = 185,934.33 × 112,620.87
  4. Step 4: Simplify right side
    124,485.39x = 20,940,086,007.47
  5. Step 5: Solve for x
    x = 20,940,086,007.47/124,485.39
  6. Step 6: Final answer
    x = 168,213.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.