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Finding the Fourth Proportional to 406,176.80, 609,265.20 and 106,637.60

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Solution

The fourth proportional to 406,176.80, 609,265.20 and 106,637.60 is: 159,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,176.80 : 609,265.20 = 106,637.60 : x
  2. Step 2: Convert to fraction form
    406,176.80/609,265.20 = 106,637.60/x
  3. Step 3: Cross multiply
    406,176.80x = 609,265.20 × 106,637.60
  4. Step 4: Simplify right side
    406,176.80x = 64,970,578,691.52
  5. Step 5: Solve for x
    x = 64,970,578,691.52/406,176.80
  6. Step 6: Final answer
    x = 159,956.40

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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.