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Finding the Fourth Proportional to 62,859.50, 94,269.15 and 20,731.70

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Solution

The fourth proportional to 62,859.50, 94,269.15 and 20,731.70 is: 31,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,859.50 : 94,269.15 = 20,731.70 : x
  2. Step 2: Convert to fraction form
    62,859.50/94,269.15 = 20,731.70/x
  3. Step 3: Cross multiply
    62,859.50x = 94,269.15 × 20,731.70
  4. Step 4: Simplify right side
    62,859.50x = 1,954,359,737.06
  5. Step 5: Solve for x
    x = 1,954,359,737.06/62,859.50
  6. Step 6: Final answer
    x = 31,090.92

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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.