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Finding the Fourth Proportional to 327,712.40, 491,584.80 and 170,248.40

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Solution

The fourth proportional to 327,712.40, 491,584.80 and 170,248.40 is: 255,381.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,712.40 : 491,584.80 = 170,248.40 : x
  2. Step 2: Convert to fraction form
    327,712.40/491,584.80 = 170,248.40/x
  3. Step 3: Cross multiply
    327,712.40x = 491,584.80 × 170,248.40
  4. Step 4: Simplify right side
    327,712.40x = 83,691,525,664.32
  5. Step 5: Solve for x
    x = 83,691,525,664.32/327,712.40
  6. Step 6: Final answer
    x = 255,381.02

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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.