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Finding the Fourth Proportional to 70,564.46, 97,380.12 and 38,736.32

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Solution

The fourth proportional to 70,564.46, 97,380.12 and 38,736.32 is: 53,456.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,564.46 : 97,380.12 = 38,736.32 : x
  2. Step 2: Convert to fraction form
    70,564.46/97,380.12 = 38,736.32/x
  3. Step 3: Cross multiply
    70,564.46x = 97,380.12 × 38,736.32
  4. Step 4: Simplify right side
    70,564.46x = 3,772,147,489.96
  5. Step 5: Solve for x
    x = 3,772,147,489.96/70,564.46
  6. Step 6: Final answer
    x = 53,456.76

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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.