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Finding the Fourth Proportional to 621,663.60, 932,956.20 and 411,231.60

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Solution

The fourth proportional to 621,663.60, 932,956.20 and 411,231.60 is: 617,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,663.60 : 932,956.20 = 411,231.60 : x
  2. Step 2: Convert to fraction form
    621,663.60/932,956.20 = 411,231.60/x
  3. Step 3: Cross multiply
    621,663.60x = 932,956.20 × 411,231.60
  4. Step 4: Simplify right side
    621,663.60x = 383,661,070,855.92
  5. Step 5: Solve for x
    x = 383,661,070,855.92/621,663.60
  6. Step 6: Final answer
    x = 617,152.22

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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.