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Finding the Fourth Proportional to 129,042.40, 193,498.80 and 58,842.40

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Solution

The fourth proportional to 129,042.40, 193,498.80 and 58,842.40 is: 88,234.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,042.40 : 193,498.80 = 58,842.40 : x
  2. Step 2: Convert to fraction form
    129,042.40/193,498.80 = 58,842.40/x
  3. Step 3: Cross multiply
    129,042.40x = 193,498.80 × 58,842.40
  4. Step 4: Simplify right side
    129,042.40x = 11,385,933,789.12
  5. Step 5: Solve for x
    x = 11,385,933,789.12/129,042.40
  6. Step 6: Final answer
    x = 88,234.05

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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.