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Finding the Fourth Proportional to 61,757.30, 85,215.87 and 34,899.59

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Solution

The fourth proportional to 61,757.30, 85,215.87 and 34,899.59 is: 48,156.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,757.30 : 85,215.87 = 34,899.59 : x
  2. Step 2: Convert to fraction form
    61,757.30/85,215.87 = 34,899.59/x
  3. Step 3: Cross multiply
    61,757.30x = 85,215.87 × 34,899.59
  4. Step 4: Simplify right side
    61,757.30x = 2,973,998,924.49
  5. Step 5: Solve for x
    x = 2,973,998,924.49/61,757.30
  6. Step 6: Final answer
    x = 48,156.23

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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.