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Finding the Fourth Proportional to 83,498.70, 125,029.35 and 61,191.30

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Solution

The fourth proportional to 83,498.70, 125,029.35 and 61,191.30 is: 91,626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,498.70 : 125,029.35 = 61,191.30 : x
  2. Step 2: Convert to fraction form
    83,498.70/125,029.35 = 61,191.30/x
  3. Step 3: Cross multiply
    83,498.70x = 125,029.35 × 61,191.30
  4. Step 4: Simplify right side
    83,498.70x = 7,650,708,464.66
  5. Step 5: Solve for x
    x = 7,650,708,464.66/83,498.70
  6. Step 6: Final answer
    x = 91,626.68

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1.5x scale

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.