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Finding the Fourth Proportional to 10,342.65, 15,516.41 and 2,947.22

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Solution

The fourth proportional to 10,342.65, 15,516.41 and 2,947.22 is: 4,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,342.65 : 15,516.41 = 2,947.22 : x
  2. Step 2: Convert to fraction form
    10,342.65/15,516.41 = 2,947.22/x
  3. Step 3: Cross multiply
    10,342.65x = 15,516.41 × 2,947.22
  4. Step 4: Simplify right side
    10,342.65x = 45,730,273.88
  5. Step 5: Solve for x
    x = 45,730,273.88/10,342.65
  6. Step 6: Final answer
    x = 4,421.52

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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.