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Finding the Fourth Proportional to 443,578.60, 665,627.10 and 163,124.20

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Solution

The fourth proportional to 443,578.60, 665,627.10 and 163,124.20 is: 244,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,578.60 : 665,627.10 = 163,124.20 : x
  2. Step 2: Convert to fraction form
    443,578.60/665,627.10 = 163,124.20/x
  3. Step 3: Cross multiply
    443,578.60x = 665,627.10 × 163,124.20
  4. Step 4: Simplify right side
    443,578.60x = 108,579,888,185.82
  5. Step 5: Solve for x
    x = 108,579,888,185.82/443,578.60
  6. Step 6: Final answer
    x = 244,781.62

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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.