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Finding the Fourth Proportional to 123,393.26, 170,283.41 and 66,804.63

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Solution

The fourth proportional to 123,393.26, 170,283.41 and 66,804.63 is: 92,190.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,393.26 : 170,283.41 = 66,804.63 : x
  2. Step 2: Convert to fraction form
    123,393.26/170,283.41 = 66,804.63/x
  3. Step 3: Cross multiply
    123,393.26x = 170,283.41 × 66,804.63
  4. Step 4: Simplify right side
    123,393.26x = 11,375,719,866.17
  5. Step 5: Solve for x
    x = 11,375,719,866.17/123,393.26
  6. Step 6: Final answer
    x = 92,190.78

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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.