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Finding the Fourth Proportional to 70,910.70, 97,913.82 and 48,297.12

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Solution

The fourth proportional to 70,910.70, 97,913.82 and 48,297.12 is: 66,688.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.70 : 97,913.82 = 48,297.12 : x
  2. Step 2: Convert to fraction form
    70,910.70/97,913.82 = 48,297.12/x
  3. Step 3: Cross multiply
    70,910.70x = 97,913.82 × 48,297.12
  4. Step 4: Simplify right side
    70,910.70x = 4,728,955,514.20
  5. Step 5: Solve for x
    x = 4,728,955,514.20/70,910.70
  6. Step 6: Final answer
    x = 66,688.88

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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.