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Finding the Fourth Proportional to 165,909.20, 248,863.80 and 124,437.20

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Solution

The fourth proportional to 165,909.20, 248,863.80 and 124,437.20 is: 186,655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,909.20 : 248,863.80 = 124,437.20 : x
  2. Step 2: Convert to fraction form
    165,909.20/248,863.80 = 124,437.20/x
  3. Step 3: Cross multiply
    165,909.20x = 248,863.80 × 124,437.20
  4. Step 4: Simplify right side
    165,909.20x = 30,967,914,453.36
  5. Step 5: Solve for x
    x = 30,967,914,453.36/165,909.20
  6. Step 6: Final answer
    x = 186,655.80

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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.