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Finding the Fourth Proportional to 61,986.82, 85,544.36 and 35,129.04

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Solution

The fourth proportional to 61,986.82, 85,544.36 and 35,129.04 is: 48,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,986.82 : 85,544.36 = 35,129.04 : x
  2. Step 2: Convert to fraction form
    61,986.82/85,544.36 = 35,129.04/x
  3. Step 3: Cross multiply
    61,986.82x = 85,544.36 × 35,129.04
  4. Step 4: Simplify right side
    61,986.82x = 3,005,091,244.21
  5. Step 5: Solve for x
    x = 3,005,091,244.21/61,986.82
  6. Step 6: Final answer
    x = 48,479.52

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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.