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Finding the Fourth Proportional to 61,731.36, 85,160.52 and 36,238.32

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Solution

The fourth proportional to 61,731.36, 85,160.52 and 36,238.32 is: 49,992.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,731.36 : 85,160.52 = 36,238.32 : x
  2. Step 2: Convert to fraction form
    61,731.36/85,160.52 = 36,238.32/x
  3. Step 3: Cross multiply
    61,731.36x = 85,160.52 × 36,238.32
  4. Step 4: Simplify right side
    61,731.36x = 3,086,074,175.13
  5. Step 5: Solve for x
    x = 3,086,074,175.13/61,731.36
  6. Step 6: Final answer
    x = 49,992.00

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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.