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Finding the Fourth Proportional to 62,728.05, 86,603.73 and 43,601.79

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Solution

The fourth proportional to 62,728.05, 86,603.73 and 43,601.79 is: 60,197.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,728.05 : 86,603.73 = 43,601.79 : x
  2. Step 2: Convert to fraction form
    62,728.05/86,603.73 = 43,601.79/x
  3. Step 3: Cross multiply
    62,728.05x = 86,603.73 × 43,601.79
  4. Step 4: Simplify right side
    62,728.05x = 3,776,077,648.68
  5. Step 5: Solve for x
    x = 3,776,077,648.68/62,728.05
  6. Step 6: Final answer
    x = 60,197.59

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1.5x scale

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.