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Finding the Fourth Proportional to 16,751.78, 25,130.40 and 5,659.13

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Solution

The fourth proportional to 16,751.78, 25,130.40 and 5,659.13 is: 8,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,751.78 : 25,130.40 = 5,659.13 : x
  2. Step 2: Convert to fraction form
    16,751.78/25,130.40 = 5,659.13/x
  3. Step 3: Cross multiply
    16,751.78x = 25,130.40 × 5,659.13
  4. Step 4: Simplify right side
    16,751.78x = 142,216,074.90
  5. Step 5: Solve for x
    x = 142,216,074.90/16,751.78
  6. Step 6: Final answer
    x = 8,489.61

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Why These Related Problems?

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