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Finding the Fourth Proportional to 443,532.68, 665,226.20 and 123,706.31

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Solution

The fourth proportional to 443,532.68, 665,226.20 and 123,706.31 is: 185,539.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,532.68 : 665,226.20 = 123,706.31 : x
  2. Step 2: Convert to fraction form
    443,532.68/665,226.20 = 123,706.31/x
  3. Step 3: Cross multiply
    443,532.68x = 665,226.20 × 123,706.31
  4. Step 4: Simplify right side
    443,532.68x = 82,292,680,489.65
  5. Step 5: Solve for x
    x = 82,292,680,489.65/443,532.68
  6. Step 6: Final answer
    x = 185,539.16

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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.