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Finding the Fourth Proportional to 140,651.60, 211,079.04 and 55,275.16

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Solution

The fourth proportional to 140,651.60, 211,079.04 and 55,275.16 is: 82,952.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,651.60 : 211,079.04 = 55,275.16 : x
  2. Step 2: Convert to fraction form
    140,651.60/211,079.04 = 55,275.16/x
  3. Step 3: Cross multiply
    140,651.60x = 211,079.04 × 55,275.16
  4. Step 4: Simplify right side
    140,651.60x = 11,667,427,708.65
  5. Step 5: Solve for x
    x = 11,667,427,708.65/140,651.60
  6. Step 6: Final answer
    x = 82,952.68

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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.