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Finding the Fourth Proportional to 443,663.20, 665,494.80 and 148,175.20

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Solution

The fourth proportional to 443,663.20, 665,494.80 and 148,175.20 is: 222,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,663.20 : 665,494.80 = 148,175.20 : x
  2. Step 2: Convert to fraction form
    443,663.20/665,494.80 = 148,175.20/x
  3. Step 3: Cross multiply
    443,663.20x = 665,494.80 × 148,175.20
  4. Step 4: Simplify right side
    443,663.20x = 98,609,825,088.96
  5. Step 5: Solve for x
    x = 98,609,825,088.96/443,663.20
  6. Step 6: Final answer
    x = 222,262.80

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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.