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Finding the Fourth Proportional to 69,124.43, 103,685.95 and 31,673.87

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Solution

The fourth proportional to 69,124.43, 103,685.95 and 31,673.87 is: 47,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,124.43 : 103,685.95 = 31,673.87 : x
  2. Step 2: Convert to fraction form
    69,124.43/103,685.95 = 31,673.87/x
  3. Step 3: Cross multiply
    69,124.43x = 103,685.95 × 31,673.87
  4. Step 4: Simplify right side
    69,124.43x = 3,284,135,301.13
  5. Step 5: Solve for x
    x = 3,284,135,301.13/69,124.43
  6. Step 6: Final answer
    x = 47,510.49

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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.