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Finding the Fourth Proportional to 61,887.38, 85,387.34 and 35,029.31

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Solution

The fourth proportional to 61,887.38, 85,387.34 and 35,029.31 is: 48,330.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,887.38 : 85,387.34 = 35,029.31 : x
  2. Step 2: Convert to fraction form
    61,887.38/85,387.34 = 35,029.31/x
  3. Step 3: Cross multiply
    61,887.38x = 85,387.34 × 35,029.31
  4. Step 4: Simplify right side
    61,887.38x = 2,991,059,000.85
  5. Step 5: Solve for x
    x = 2,991,059,000.85/61,887.38
  6. Step 6: Final answer
    x = 48,330.68

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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.