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Finding the Fourth Proportional to 123,546.84, 170,494.80 and 66,958.20

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Solution

The fourth proportional to 123,546.84, 170,494.80 and 66,958.20 is: 92,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,546.84 : 170,494.80 = 66,958.20 : x
  2. Step 2: Convert to fraction form
    123,546.84/170,494.80 = 66,958.20/x
  3. Step 3: Cross multiply
    123,546.84x = 170,494.80 × 66,958.20
  4. Step 4: Simplify right side
    123,546.84x = 11,416,024,917.36
  5. Step 5: Solve for x
    x = 11,416,024,917.36/123,546.84
  6. Step 6: Final answer
    x = 92,402.40

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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.