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Finding the Fourth Proportional to 61,777.49, 85,251.69 and 34,919.30

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Solution

The fourth proportional to 61,777.49, 85,251.69 and 34,919.30 is: 48,187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,777.49 : 85,251.69 = 34,919.30 : x
  2. Step 2: Convert to fraction form
    61,777.49/85,251.69 = 34,919.30/x
  3. Step 3: Cross multiply
    61,777.49x = 85,251.69 × 34,919.30
  4. Step 4: Simplify right side
    61,777.49x = 2,976,929,551.75
  5. Step 5: Solve for x
    x = 2,976,929,551.75/61,777.49
  6. Step 6: Final answer
    x = 48,187.94

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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.