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Finding the Fourth Proportional to 15,991.16, 23,980.98 and 6,757.88

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Solution

The fourth proportional to 15,991.16, 23,980.98 and 6,757.88 is: 10,134.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,991.16 : 23,980.98 = 6,757.88 : x
  2. Step 2: Convert to fraction form
    15,991.16/23,980.98 = 6,757.88/x
  3. Step 3: Cross multiply
    15,991.16x = 23,980.98 × 6,757.88
  4. Step 4: Simplify right side
    15,991.16x = 162,060,585.12
  5. Step 5: Solve for x
    x = 162,060,585.12/15,991.16
  6. Step 6: Final answer
    x = 10,134.39

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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.