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Finding the Fourth Proportional to 87,868.92, 121,260.78 and 48,124.92

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Solution

The fourth proportional to 87,868.92, 121,260.78 and 48,124.92 is: 66,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,868.92 : 121,260.78 = 48,124.92 : x
  2. Step 2: Convert to fraction form
    87,868.92/121,260.78 = 48,124.92/x
  3. Step 3: Cross multiply
    87,868.92x = 121,260.78 × 48,124.92
  4. Step 4: Simplify right side
    87,868.92x = 5,835,665,336.64
  5. Step 5: Solve for x
    x = 5,835,665,336.64/87,868.92
  6. Step 6: Final answer
    x = 66,413.30

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1.5x scale

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.