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Finding the Fourth Proportional to 19,397.52, 29,110.77 and 13,142.70

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Solution

The fourth proportional to 19,397.52, 29,110.77 and 13,142.70 is: 19,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,397.52 : 29,110.77 = 13,142.70 : x
  2. Step 2: Convert to fraction form
    19,397.52/29,110.77 = 13,142.70/x
  3. Step 3: Cross multiply
    19,397.52x = 29,110.77 × 13,142.70
  4. Step 4: Simplify right side
    19,397.52x = 382,594,116.88
  5. Step 5: Solve for x
    x = 382,594,116.88/19,397.52
  6. Step 6: Final answer
    x = 19,723.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.