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Finding the Fourth Proportional to 324,909.72, 487,442.34 and 164,585.88

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Solution

The fourth proportional to 324,909.72, 487,442.34 and 164,585.88 is: 246,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,909.72 : 487,442.34 = 164,585.88 : x
  2. Step 2: Convert to fraction form
    324,909.72/487,442.34 = 164,585.88/x
  3. Step 3: Cross multiply
    324,909.72x = 487,442.34 × 164,585.88
  4. Step 4: Simplify right side
    324,909.72x = 80,226,126,478.16
  5. Step 5: Solve for x
    x = 80,226,126,478.16/324,909.72
  6. Step 6: Final answer
    x = 246,918.21

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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.