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Finding the Fourth Proportional to 70,031.79, 96,643.53 and 38,200.41

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Solution

The fourth proportional to 70,031.79, 96,643.53 and 38,200.41 is: 52,716.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,031.79 : 96,643.53 = 38,200.41 : x
  2. Step 2: Convert to fraction form
    70,031.79/96,643.53 = 38,200.41/x
  3. Step 3: Cross multiply
    70,031.79x = 96,643.53 × 38,200.41
  4. Step 4: Simplify right side
    70,031.79x = 3,691,822,469.85
  5. Step 5: Solve for x
    x = 3,691,822,469.85/70,031.79
  6. Step 6: Final answer
    x = 52,716.38

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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.