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Finding the Fourth Proportional to 123,571.44, 170,427.06 and 75,791.16

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Solution

The fourth proportional to 123,571.44, 170,427.06 and 75,791.16 is: 104,529.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,571.44 : 170,427.06 = 75,791.16 : x
  2. Step 2: Convert to fraction form
    123,571.44/170,427.06 = 75,791.16/x
  3. Step 3: Cross multiply
    123,571.44x = 170,427.06 × 75,791.16
  4. Step 4: Simplify right side
    123,571.44x = 12,916,864,572.79
  5. Step 5: Solve for x
    x = 12,916,864,572.79/123,571.44
  6. Step 6: Final answer
    x = 104,529.53

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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.