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Finding the Fourth Proportional to 123,191.87, 170,004.76 and 66,603.24

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Solution

The fourth proportional to 123,191.87, 170,004.76 and 66,603.24 is: 91,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,191.87 : 170,004.76 = 66,603.24 : x
  2. Step 2: Convert to fraction form
    123,191.87/170,004.76 = 66,603.24/x
  3. Step 3: Cross multiply
    123,191.87x = 170,004.76 × 66,603.24
  4. Step 4: Simplify right side
    123,191.87x = 11,322,867,664.91
  5. Step 5: Solve for x
    x = 11,322,867,664.91/123,191.87
  6. Step 6: Final answer
    x = 91,912.46

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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.