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Finding the Fourth Proportional to 70,138.12, 96,790.80 and 41,843.20

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Solution

The fourth proportional to 70,138.12, 96,790.80 and 41,843.20 is: 57,743.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,138.12 : 96,790.80 = 41,843.20 : x
  2. Step 2: Convert to fraction form
    70,138.12/96,790.80 = 41,843.20/x
  3. Step 3: Cross multiply
    70,138.12x = 96,790.80 × 41,843.20
  4. Step 4: Simplify right side
    70,138.12x = 4,050,036,802.56
  5. Step 5: Solve for x
    x = 4,050,036,802.56/70,138.12
  6. Step 6: Final answer
    x = 57,743.73

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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.