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Finding the Fourth Proportional to 324,613.60, 487,066.20 and 147,029.20

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Solution

The fourth proportional to 324,613.60, 487,066.20 and 147,029.20 is: 220,609.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,613.60 : 487,066.20 = 147,029.20 : x
  2. Step 2: Convert to fraction form
    324,613.60/487,066.20 = 147,029.20/x
  3. Step 3: Cross multiply
    324,613.60x = 487,066.20 × 147,029.20
  4. Step 4: Simplify right side
    324,613.60x = 71,612,953,733.04
  5. Step 5: Solve for x
    x = 71,612,953,733.04/324,613.60
  6. Step 6: Final answer
    x = 220,609.84

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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.