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Finding the Fourth Proportional to 83,691.88, 115,494.40 and 45,451.16

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Solution

The fourth proportional to 83,691.88, 115,494.40 and 45,451.16 is: 62,722.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,691.88 : 115,494.40 = 45,451.16 : x
  2. Step 2: Convert to fraction form
    83,691.88/115,494.40 = 45,451.16/x
  3. Step 3: Cross multiply
    83,691.88x = 115,494.40 × 45,451.16
  4. Step 4: Simplify right side
    83,691.88x = 5,249,354,453.50
  5. Step 5: Solve for x
    x = 5,249,354,453.50/83,691.88
  6. Step 6: Final answer
    x = 62,722.39

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1.5x scale

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.