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Finding the Fourth Proportional to 51,818.80, 77,785.80 and 32,119.60

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Solution

The fourth proportional to 51,818.80, 77,785.80 and 32,119.60 is: 48,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,818.80 : 77,785.80 = 32,119.60 : x
  2. Step 2: Convert to fraction form
    51,818.80/77,785.80 = 32,119.60/x
  3. Step 3: Cross multiply
    51,818.80x = 77,785.80 × 32,119.60
  4. Step 4: Simplify right side
    51,818.80x = 2,498,448,781.68
  5. Step 5: Solve for x
    x = 2,498,448,781.68/51,818.80
  6. Step 6: Final answer
    x = 48,215.10

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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.