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Finding the Fourth Proportional to 17,537.20, 26,248.20 and 13,620.40

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Solution

The fourth proportional to 17,537.20, 26,248.20 and 13,620.40 is: 20,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,537.20 : 26,248.20 = 13,620.40 : x
  2. Step 2: Convert to fraction form
    17,537.20/26,248.20 = 13,620.40/x
  3. Step 3: Cross multiply
    17,537.20x = 26,248.20 × 13,620.40
  4. Step 4: Simplify right side
    17,537.20x = 357,510,983.28
  5. Step 5: Solve for x
    x = 357,510,983.28/17,537.20
  6. Step 6: Final answer
    x = 20,385.86

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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.