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Finding the Fourth Proportional to 16,781.70, 25,151.02 and 6,927.90

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Solution

The fourth proportional to 16,781.70, 25,151.02 and 6,927.90 is: 10,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,781.70 : 25,151.02 = 6,927.90 : x
  2. Step 2: Convert to fraction form
    16,781.70/25,151.02 = 6,927.90/x
  3. Step 3: Cross multiply
    16,781.70x = 25,151.02 × 6,927.90
  4. Step 4: Simplify right side
    16,781.70x = 174,243,751.46
  5. Step 5: Solve for x
    x = 174,243,751.46/16,781.70
  6. Step 6: Final answer
    x = 10,382.96

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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.