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Finding the Fourth Proportional to 90,478.92, 124,859.93 and 50,193.02

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Solution

The fourth proportional to 90,478.92, 124,859.93 and 50,193.02 is: 69,265.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,478.92 : 124,859.93 = 50,193.02 : x
  2. Step 2: Convert to fraction form
    90,478.92/124,859.93 = 50,193.02/x
  3. Step 3: Cross multiply
    90,478.92x = 124,859.93 × 50,193.02
  4. Step 4: Simplify right side
    90,478.92x = 6,267,096,604.87
  5. Step 5: Solve for x
    x = 6,267,096,604.87/90,478.92
  6. Step 6: Final answer
    x = 69,265.82

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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.