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Finding the Fourth Proportional to 110,259.20, 165,388.80 and 105,958.40

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Solution

The fourth proportional to 110,259.20, 165,388.80 and 105,958.40 is: 158,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,259.20 : 165,388.80 = 105,958.40 : x
  2. Step 2: Convert to fraction form
    110,259.20/165,388.80 = 105,958.40/x
  3. Step 3: Cross multiply
    110,259.20x = 165,388.80 × 105,958.40
  4. Step 4: Simplify right side
    110,259.20x = 17,524,332,625.92
  5. Step 5: Solve for x
    x = 17,524,332,625.92/110,259.20
  6. Step 6: Final answer
    x = 158,937.60

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1.5x scale

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.