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Finding the Fourth Proportional to 29,387.38, 40,543.05 and 16,805.38

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Solution

The fourth proportional to 29,387.38, 40,543.05 and 16,805.38 is: 23,184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,387.38 : 40,543.05 = 16,805.38 : x
  2. Step 2: Convert to fraction form
    29,387.38/40,543.05 = 16,805.38/x
  3. Step 3: Cross multiply
    29,387.38x = 40,543.05 × 16,805.38
  4. Step 4: Simplify right side
    29,387.38x = 681,341,361.61
  5. Step 5: Solve for x
    x = 681,341,361.61/29,387.38
  6. Step 6: Final answer
    x = 23,184.83

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1.5x scale

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.