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Finding the Fourth Proportional to 83,066.88, 124,396.73 and 75,079.20

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Solution

The fourth proportional to 83,066.88, 124,396.73 and 75,079.20 is: 112,434.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,066.88 : 124,396.73 = 75,079.20 : x
  2. Step 2: Convert to fraction form
    83,066.88/124,396.73 = 75,079.20/x
  3. Step 3: Cross multiply
    83,066.88x = 124,396.73 × 75,079.20
  4. Step 4: Simplify right side
    83,066.88x = 9,339,606,971.02
  5. Step 5: Solve for x
    x = 9,339,606,971.02/83,066.88
  6. Step 6: Final answer
    x = 112,434.79

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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.