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Finding the Fourth Proportional to 62,642.96, 86,349.16 and 47,474.96

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Solution

The fourth proportional to 62,642.96, 86,349.16 and 47,474.96 is: 65,441.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,642.96 : 86,349.16 = 47,474.96 : x
  2. Step 2: Convert to fraction form
    62,642.96/86,349.16 = 47,474.96/x
  3. Step 3: Cross multiply
    62,642.96x = 86,349.16 × 47,474.96
  4. Step 4: Simplify right side
    62,642.96x = 4,099,422,917.03
  5. Step 5: Solve for x
    x = 4,099,422,917.03/62,642.96
  6. Step 6: Final answer
    x = 65,441.08

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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.