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Finding the Fourth Proportional to 86,514.80, 129,789.50 and 36,594.68

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Solution

The fourth proportional to 86,514.80, 129,789.50 and 36,594.68 is: 54,899.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,514.80 : 129,789.50 = 36,594.68 : x
  2. Step 2: Convert to fraction form
    86,514.80/129,789.50 = 36,594.68/x
  3. Step 3: Cross multiply
    86,514.80x = 129,789.50 × 36,594.68
  4. Step 4: Simplify right side
    86,514.80x = 4,749,604,387.94
  5. Step 5: Solve for x
    x = 4,749,604,387.94/86,514.80
  6. Step 6: Final answer
    x = 54,899.33

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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.