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Finding the Fourth Proportional to 71,846.80, 99,139.48 and 41,631.84

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Solution

The fourth proportional to 71,846.80, 99,139.48 and 41,631.84 is: 57,446.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,846.80 : 99,139.48 = 41,631.84 : x
  2. Step 2: Convert to fraction form
    71,846.80/99,139.48 = 41,631.84/x
  3. Step 3: Cross multiply
    71,846.80x = 99,139.48 × 41,631.84
  4. Step 4: Simplify right side
    71,846.80x = 4,127,358,969.04
  5. Step 5: Solve for x
    x = 4,127,358,969.04/71,846.80
  6. Step 6: Final answer
    x = 57,446.66

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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.