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Finding the Fourth Proportional to 70,343.65, 97,076.68 and 38,512.76

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Solution

The fourth proportional to 70,343.65, 97,076.68 and 38,512.76 is: 53,148.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,343.65 : 97,076.68 = 38,512.76 : x
  2. Step 2: Convert to fraction form
    70,343.65/97,076.68 = 38,512.76/x
  3. Step 3: Cross multiply
    70,343.65x = 97,076.68 × 38,512.76
  4. Step 4: Simplify right side
    70,343.65x = 3,738,691,024.85
  5. Step 5: Solve for x
    x = 3,738,691,024.85/70,343.65
  6. Step 6: Final answer
    x = 53,148.95

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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.