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Finding the Fourth Proportional to 70,263.74, 96,962.76 and 38,431.97

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Solution

The fourth proportional to 70,263.74, 96,962.76 and 38,431.97 is: 53,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,263.74 : 96,962.76 = 38,431.97 : x
  2. Step 2: Convert to fraction form
    70,263.74/96,962.76 = 38,431.97/x
  3. Step 3: Cross multiply
    70,263.74x = 96,962.76 × 38,431.97
  4. Step 4: Simplify right side
    70,263.74x = 3,726,469,883.44
  5. Step 5: Solve for x
    x = 3,726,469,883.44/70,263.74
  6. Step 6: Final answer
    x = 53,035.46

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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.