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Finding the Fourth Proportional to 70,713.38, 97,581.84 and 38,880.38

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Solution

The fourth proportional to 70,713.38, 97,581.84 and 38,880.38 is: 53,653.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,713.38 : 97,581.84 = 38,880.38 : x
  2. Step 2: Convert to fraction form
    70,713.38/97,581.84 = 38,880.38/x
  3. Step 3: Cross multiply
    70,713.38x = 97,581.84 × 38,880.38
  4. Step 4: Simplify right side
    70,713.38x = 3,794,019,020.30
  5. Step 5: Solve for x
    x = 3,794,019,020.30/70,713.38
  6. Step 6: Final answer
    x = 53,653.48

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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.