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Finding the Fourth Proportional to 70,690.65, 97,553.07 and 38,859.54

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Solution

The fourth proportional to 70,690.65, 97,553.07 and 38,859.54 is: 53,626.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,690.65 : 97,553.07 = 38,859.54 : x
  2. Step 2: Convert to fraction form
    70,690.65/97,553.07 = 38,859.54/x
  3. Step 3: Cross multiply
    70,690.65x = 97,553.07 × 38,859.54
  4. Step 4: Simplify right side
    70,690.65x = 3,790,867,425.79
  5. Step 5: Solve for x
    x = 3,790,867,425.79/70,690.65
  6. Step 6: Final answer
    x = 53,626.15

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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.