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Finding the Fourth Proportional to 324,666.90, 486,672.30 and 147,301.20

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Solution

The fourth proportional to 324,666.90, 486,672.30 and 147,301.20 is: 220,802.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,666.90 : 486,672.30 = 147,301.20 : x
  2. Step 2: Convert to fraction form
    324,666.90/486,672.30 = 147,301.20/x
  3. Step 3: Cross multiply
    324,666.90x = 486,672.30 × 147,301.20
  4. Step 4: Simplify right side
    324,666.90x = 71,687,413,796.76
  5. Step 5: Solve for x
    x = 71,687,413,796.76/324,666.90
  6. Step 6: Final answer
    x = 220,802.96

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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.