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Finding the Fourth Proportional to 70,864.20, 97,793.22 and 39,034.20

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Solution

The fourth proportional to 70,864.20, 97,793.22 and 39,034.20 is: 53,867.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,864.20 : 97,793.22 = 39,034.20 : x
  2. Step 2: Convert to fraction form
    70,864.20/97,793.22 = 39,034.20/x
  3. Step 3: Cross multiply
    70,864.20x = 97,793.22 × 39,034.20
  4. Step 4: Simplify right side
    70,864.20x = 3,817,280,108.12
  5. Step 5: Solve for x
    x = 3,817,280,108.12/70,864.20
  6. Step 6: Final answer
    x = 53,867.54

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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.