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Finding the Fourth Proportional to 70,221.57, 96,907.49 and 38,392.83

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Solution

The fourth proportional to 70,221.57, 96,907.49 and 38,392.83 is: 52,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,221.57 : 96,907.49 = 38,392.83 : x
  2. Step 2: Convert to fraction form
    70,221.57/96,907.49 = 38,392.83/x
  3. Step 3: Cross multiply
    70,221.57x = 96,907.49 × 38,392.83
  4. Step 4: Simplify right side
    70,221.57x = 3,720,552,789.30
  5. Step 5: Solve for x
    x = 3,720,552,789.30/70,221.57
  6. Step 6: Final answer
    x = 52,983.05

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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.