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Finding the Fourth Proportional to 486,008.50, 670,711.17 and 271,167.34

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Solution

The fourth proportional to 486,008.50, 670,711.17 and 271,167.34 is: 374,221.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,008.50 : 670,711.17 = 271,167.34 : x
  2. Step 2: Convert to fraction form
    486,008.50/670,711.17 = 271,167.34/x
  3. Step 3: Cross multiply
    486,008.50x = 670,711.17 × 271,167.34
  4. Step 4: Simplify right side
    486,008.50x = 181,874,963,877.19
  5. Step 5: Solve for x
    x = 181,874,963,877.19/486,008.50
  6. Step 6: Final answer
    x = 374,221.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.