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Finding the Fourth Proportional to 123,686.97, 170,673.62 and 69,242.12

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Solution

The fourth proportional to 123,686.97, 170,673.62 and 69,242.12 is: 95,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,686.97 : 170,673.62 = 69,242.12 : x
  2. Step 2: Convert to fraction form
    123,686.97/170,673.62 = 69,242.12/x
  3. Step 3: Cross multiply
    123,686.97x = 170,673.62 × 69,242.12
  4. Step 4: Simplify right side
    123,686.97x = 11,817,802,237.30
  5. Step 5: Solve for x
    x = 11,817,802,237.30/123,686.97
  6. Step 6: Final answer
    x = 95,546.05

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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.