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Finding the Fourth Proportional to 110,843.20, 166,264.80 and 66,447.10

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Solution

The fourth proportional to 110,843.20, 166,264.80 and 66,447.10 is: 99,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,843.20 : 166,264.80 = 66,447.10 : x
  2. Step 2: Convert to fraction form
    110,843.20/166,264.80 = 66,447.10/x
  3. Step 3: Cross multiply
    110,843.20x = 166,264.80 × 66,447.10
  4. Step 4: Simplify right side
    110,843.20x = 11,047,813,792.08
  5. Step 5: Solve for x
    x = 11,047,813,792.08/110,843.20
  6. Step 6: Final answer
    x = 99,670.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.