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Finding the Fourth Proportional to 88,489, 122,114.82 and 48,745

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Solution

The fourth proportional to 88,489, 122,114.82 and 48,745 is: 67,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,489 : 122,114.82 = 48,745 : x
  2. Step 2: Convert to fraction form
    88,489/122,114.82 = 48,745/x
  3. Step 3: Cross multiply
    88,489x = 122,114.82 × 48,745
  4. Step 4: Simplify right side
    88,489x = 5,952,486,900.90
  5. Step 5: Solve for x
    x = 5,952,486,900.90/88,489
  6. Step 6: Final answer
    x = 67,268.10

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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.