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Finding the Fourth Proportional to 61,990.82, 85,544.52 and 35,131.76

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Solution

The fourth proportional to 61,990.82, 85,544.52 and 35,131.76 is: 48,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.82 : 85,544.52 = 35,131.76 : x
  2. Step 2: Convert to fraction form
    61,990.82/85,544.52 = 35,131.76/x
  3. Step 3: Cross multiply
    61,990.82x = 85,544.52 × 35,131.76
  4. Step 4: Simplify right side
    61,990.82x = 3,005,329,545.96
  5. Step 5: Solve for x
    x = 3,005,329,545.96/61,990.82
  6. Step 6: Final answer
    x = 48,480.24

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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.