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Finding the Fourth Proportional to 408,207.60, 612,092.70 and 171,282.60

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Solution

The fourth proportional to 408,207.60, 612,092.70 and 171,282.60 is: 256,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,207.60 : 612,092.70 = 171,282.60 : x
  2. Step 2: Convert to fraction form
    408,207.60/612,092.70 = 171,282.60/x
  3. Step 3: Cross multiply
    408,207.60x = 612,092.70 × 171,282.60
  4. Step 4: Simplify right side
    408,207.60x = 104,840,829,097.02
  5. Step 5: Solve for x
    x = 104,840,829,097.02/408,207.60
  6. Step 6: Final answer
    x = 256,832.13

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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.