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Finding the Fourth Proportional to 13,917.17, 20,873.43 and 5,030.82

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Solution

The fourth proportional to 13,917.17, 20,873.43 and 5,030.82 is: 7,545.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.17 : 20,873.43 = 5,030.82 : x
  2. Step 2: Convert to fraction form
    13,917.17/20,873.43 = 5,030.82/x
  3. Step 3: Cross multiply
    13,917.17x = 20,873.43 × 5,030.82
  4. Step 4: Simplify right side
    13,917.17x = 105,010,371.97
  5. Step 5: Solve for x
    x = 105,010,371.97/13,917.17
  6. Step 6: Final answer
    x = 7,545.38

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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.