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Finding the Fourth Proportional to 443,412.60, 665,217.18 and 127,844.92

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Solution

The fourth proportional to 443,412.60, 665,217.18 and 127,844.92 is: 191,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,412.60 : 665,217.18 = 127,844.92 : x
  2. Step 2: Convert to fraction form
    443,412.60/665,217.18 = 127,844.92/x
  3. Step 3: Cross multiply
    443,412.60x = 665,217.18 × 127,844.92
  4. Step 4: Simplify right side
    443,412.60x = 85,044,637,159.73
  5. Step 5: Solve for x
    x = 85,044,637,159.73/443,412.60
  6. Step 6: Final answer
    x = 191,795.72

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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.