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Finding the Fourth Proportional to 69,348.11, 95,703.11 and 40,663.79

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Solution

The fourth proportional to 69,348.11, 95,703.11 and 40,663.79 is: 56,117.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,348.11 : 95,703.11 = 40,663.79 : x
  2. Step 2: Convert to fraction form
    69,348.11/95,703.11 = 40,663.79/x
  3. Step 3: Cross multiply
    69,348.11x = 95,703.11 × 40,663.79
  4. Step 4: Simplify right side
    69,348.11x = 3,891,650,790.53
  5. Step 5: Solve for x
    x = 3,891,650,790.53/69,348.11
  6. Step 6: Final answer
    x = 56,117.62

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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.