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Finding the Fourth Proportional to 79,325.04, 109,471.96 and 47,487.78

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Solution

The fourth proportional to 79,325.04, 109,471.96 and 47,487.78 is: 65,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,325.04 : 109,471.96 = 47,487.78 : x
  2. Step 2: Convert to fraction form
    79,325.04/109,471.96 = 47,487.78/x
  3. Step 3: Cross multiply
    79,325.04x = 109,471.96 × 47,487.78
  4. Step 4: Simplify right side
    79,325.04x = 5,198,580,352.65
  5. Step 5: Solve for x
    x = 5,198,580,352.65/79,325.04
  6. Step 6: Final answer
    x = 65,535.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.