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Finding the Fourth Proportional to 88,211, 121,731.18 and 48,467

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Solution

The fourth proportional to 88,211, 121,731.18 and 48,467 is: 66,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,211 : 121,731.18 = 48,467 : x
  2. Step 2: Convert to fraction form
    88,211/121,731.18 = 48,467/x
  3. Step 3: Cross multiply
    88,211x = 121,731.18 × 48,467
  4. Step 4: Simplify right side
    88,211x = 5,899,945,101.06
  5. Step 5: Solve for x
    x = 5,899,945,101.06/88,211
  6. Step 6: Final answer
    x = 66,884.46

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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.