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Finding the Fourth Proportional to 123,198.49, 170,013.09 and 69,483.97

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Solution

The fourth proportional to 123,198.49, 170,013.09 and 69,483.97 is: 95,887.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,198.49 : 170,013.09 = 69,483.97 : x
  2. Step 2: Convert to fraction form
    123,198.49/170,013.09 = 69,483.97/x
  3. Step 3: Cross multiply
    123,198.49x = 170,013.09 × 69,483.97
  4. Step 4: Simplify right side
    123,198.49x = 11,813,184,445.17
  5. Step 5: Solve for x
    x = 11,813,184,445.17/123,198.49
  6. Step 6: Final answer
    x = 95,887.41

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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.