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Finding the Fourth Proportional to 110,621.70, 165,932.55 and 75,629.70

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Solution

The fourth proportional to 110,621.70, 165,932.55 and 75,629.70 is: 113,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,621.70 : 165,932.55 = 75,629.70 : x
  2. Step 2: Convert to fraction form
    110,621.70/165,932.55 = 75,629.70/x
  3. Step 3: Cross multiply
    110,621.70x = 165,932.55 × 75,629.70
  4. Step 4: Simplify right side
    110,621.70x = 12,549,428,976.74
  5. Step 5: Solve for x
    x = 12,549,428,976.74/110,621.70
  6. Step 6: Final answer
    x = 113,444.55

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1.5x scale

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.