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Finding the Fourth Proportional to 486,706.60, 671,647.96 and 271,849.80

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Solution

The fourth proportional to 486,706.60, 671,647.96 and 271,849.80 is: 375,148.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,706.60 : 671,647.96 = 271,849.80 : x
  2. Step 2: Convert to fraction form
    486,706.60/671,647.96 = 271,849.80/x
  3. Step 3: Cross multiply
    486,706.60x = 671,647.96 × 271,849.80
  4. Step 4: Simplify right side
    486,706.60x = 182,587,363,596.41
  5. Step 5: Solve for x
    x = 182,587,363,596.41/486,706.60
  6. Step 6: Final answer
    x = 375,148.73

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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.