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Finding the Fourth Proportional to 29,449.78, 40,641.78 and 16,876.96

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Solution

The fourth proportional to 29,449.78, 40,641.78 and 16,876.96 is: 23,290.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,449.78 : 40,641.78 = 16,876.96 : x
  2. Step 2: Convert to fraction form
    29,449.78/40,641.78 = 16,876.96/x
  3. Step 3: Cross multiply
    29,449.78x = 40,641.78 × 16,876.96
  4. Step 4: Simplify right side
    29,449.78x = 685,909,695.39
  5. Step 5: Solve for x
    x = 685,909,695.39/29,449.78
  6. Step 6: Final answer
    x = 23,290.83

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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.