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Finding the Fourth Proportional to 29,067.20, 40,111.20 and 17,888.96

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Solution

The fourth proportional to 29,067.20, 40,111.20 and 17,888.96 is: 24,685.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,067.20 : 40,111.20 = 17,888.96 : x
  2. Step 2: Convert to fraction form
    29,067.20/40,111.20 = 17,888.96/x
  3. Step 3: Cross multiply
    29,067.20x = 40,111.20 × 17,888.96
  4. Step 4: Simplify right side
    29,067.20x = 717,547,652.35
  5. Step 5: Solve for x
    x = 717,547,652.35/29,067.20
  6. Step 6: Final answer
    x = 24,685.82

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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.