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Finding the Fourth Proportional to 70,285.76, 96,993.78 and 38,454.92

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Solution

The fourth proportional to 70,285.76, 96,993.78 and 38,454.92 is: 53,067.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,285.76 : 96,993.78 = 38,454.92 : x
  2. Step 2: Convert to fraction form
    70,285.76/96,993.78 = 38,454.92/x
  3. Step 3: Cross multiply
    70,285.76x = 96,993.78 × 38,454.92
  4. Step 4: Simplify right side
    70,285.76x = 3,729,888,050.40
  5. Step 5: Solve for x
    x = 3,729,888,050.40/70,285.76
  6. Step 6: Final answer
    x = 53,067.48

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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.