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Finding the Fourth Proportional to 165,605.80, 248,422.20 and 70,836.70

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Solution

The fourth proportional to 165,605.80, 248,422.20 and 70,836.70 is: 106,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,605.80 : 248,422.20 = 70,836.70 : x
  2. Step 2: Convert to fraction form
    165,605.80/248,422.20 = 70,836.70/x
  3. Step 3: Cross multiply
    165,605.80x = 248,422.20 × 70,836.70
  4. Step 4: Simplify right side
    165,605.80x = 17,597,408,854.74
  5. Step 5: Solve for x
    x = 17,597,408,854.74/165,605.80
  6. Step 6: Final answer
    x = 106,260.82

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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.