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Finding the Fourth Proportional to 61,724.98, 85,185.72 and 34,872.42

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Solution

The fourth proportional to 61,724.98, 85,185.72 and 34,872.42 is: 48,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,724.98 : 85,185.72 = 34,872.42 : x
  2. Step 2: Convert to fraction form
    61,724.98/85,185.72 = 34,872.42/x
  3. Step 3: Cross multiply
    61,724.98x = 85,185.72 × 34,872.42
  4. Step 4: Simplify right side
    61,724.98x = 2,970,632,205.84
  5. Step 5: Solve for x
    x = 2,970,632,205.84/61,724.98
  6. Step 6: Final answer
    x = 48,126.90

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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.