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Finding the Fourth Proportional to 140,889.60, 211,528.80 and 111,340.80

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Solution

The fourth proportional to 140,889.60, 211,528.80 and 111,340.80 is: 167,164.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,889.60 : 211,528.80 = 111,340.80 : x
  2. Step 2: Convert to fraction form
    140,889.60/211,528.80 = 111,340.80/x
  3. Step 3: Cross multiply
    140,889.60x = 211,528.80 × 111,340.80
  4. Step 4: Simplify right side
    140,889.60x = 23,551,785,815.04
  5. Step 5: Solve for x
    x = 23,551,785,815.04/140,889.60
  6. Step 6: Final answer
    x = 167,164.83

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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.