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Finding the Fourth Proportional to 83,524.80, 124,922.70 and 74,703.90

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Solution

The fourth proportional to 83,524.80, 124,922.70 and 74,703.90 is: 111,729.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,524.80 : 124,922.70 = 74,703.90 : x
  2. Step 2: Convert to fraction form
    83,524.80/124,922.70 = 74,703.90/x
  3. Step 3: Cross multiply
    83,524.80x = 124,922.70 × 74,703.90
  4. Step 4: Simplify right side
    83,524.80x = 9,332,212,888.53
  5. Step 5: Solve for x
    x = 9,332,212,888.53/83,524.80
  6. Step 6: Final answer
    x = 111,729.84

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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.