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Finding the Fourth Proportional to 123,554.52, 170,506.08 and 66,966.84

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Solution

The fourth proportional to 123,554.52, 170,506.08 and 66,966.84 is: 92,414.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,554.52 : 170,506.08 = 66,966.84 : x
  2. Step 2: Convert to fraction form
    123,554.52/170,506.08 = 66,966.84/x
  3. Step 3: Cross multiply
    123,554.52x = 170,506.08 × 66,966.84
  4. Step 4: Simplify right side
    123,554.52x = 11,418,253,378.39
  5. Step 5: Solve for x
    x = 11,418,253,378.39/123,554.52
  6. Step 6: Final answer
    x = 92,414.70

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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.