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Finding the Fourth Proportional to 61,711.64, 85,161.48 and 36,218.24

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Solution

The fourth proportional to 61,711.64, 85,161.48 and 36,218.24 is: 49,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,711.64 : 85,161.48 = 36,218.24 : x
  2. Step 2: Convert to fraction form
    61,711.64/85,161.48 = 36,218.24/x
  3. Step 3: Cross multiply
    61,711.64x = 85,161.48 × 36,218.24
  4. Step 4: Simplify right side
    61,711.64x = 3,084,398,921.40
  5. Step 5: Solve for x
    x = 3,084,398,921.40/61,711.64
  6. Step 6: Final answer
    x = 49,980.83

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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.