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Finding the Fourth Proportional to 83,121.93, 114,559.92 and 62,930.43

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Solution

The fourth proportional to 83,121.93, 114,559.92 and 62,930.43 is: 86,731.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121.93 : 114,559.92 = 62,930.43 : x
  2. Step 2: Convert to fraction form
    83,121.93/114,559.92 = 62,930.43/x
  3. Step 3: Cross multiply
    83,121.93x = 114,559.92 × 62,930.43
  4. Step 4: Simplify right side
    83,121.93x = 7,209,305,026.37
  5. Step 5: Solve for x
    x = 7,209,305,026.37/83,121.93
  6. Step 6: Final answer
    x = 86,731.68

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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.