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Finding the Fourth Proportional to 70,496.12, 97,286 and 38,663.12

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Solution

The fourth proportional to 70,496.12, 97,286 and 38,663.12 is: 53,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,496.12 : 97,286 = 38,663.12 : x
  2. Step 2: Convert to fraction form
    70,496.12/97,286 = 38,663.12/x
  3. Step 3: Cross multiply
    70,496.12x = 97,286 × 38,663.12
  4. Step 4: Simplify right side
    70,496.12x = 3,761,380,292.32
  5. Step 5: Solve for x
    x = 3,761,380,292.32/70,496.12
  6. Step 6: Final answer
    x = 53,355.85

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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.