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Finding the Fourth Proportional to 123,190.88, 170,003.48 and 66,602.25

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Solution

The fourth proportional to 123,190.88, 170,003.48 and 66,602.25 is: 91,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,190.88 : 170,003.48 = 66,602.25 : x
  2. Step 2: Convert to fraction form
    123,190.88/170,003.48 = 66,602.25/x
  3. Step 3: Cross multiply
    123,190.88x = 170,003.48 × 66,602.25
  4. Step 4: Simplify right side
    123,190.88x = 11,322,613,942.82
  5. Step 5: Solve for x
    x = 11,322,613,942.82/123,190.88
  6. Step 6: Final answer
    x = 91,911.14

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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.