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Finding the Fourth Proportional to 85,947.66, 118,605.92 and 47,704.97

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Solution

The fourth proportional to 85,947.66, 118,605.92 and 47,704.97 is: 65,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,947.66 : 118,605.92 = 47,704.97 : x
  2. Step 2: Convert to fraction form
    85,947.66/118,605.92 = 47,704.97/x
  3. Step 3: Cross multiply
    85,947.66x = 118,605.92 × 47,704.97
  4. Step 4: Simplify right side
    85,947.66x = 5,658,091,023.87
  5. Step 5: Solve for x
    x = 5,658,091,023.87/85,947.66
  6. Step 6: Final answer
    x = 65,831.82

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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.