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Finding the Fourth Proportional to 110,401.20, 165,610.80 and 47,221.80

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Solution

The fourth proportional to 110,401.20, 165,610.80 and 47,221.80 is: 70,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,401.20 : 165,610.80 = 47,221.80 : x
  2. Step 2: Convert to fraction form
    110,401.20/165,610.80 = 47,221.80/x
  3. Step 3: Cross multiply
    110,401.20x = 165,610.80 × 47,221.80
  4. Step 4: Simplify right side
    110,401.20x = 7,820,440,075.44
  5. Step 5: Solve for x
    x = 7,820,440,075.44/110,401.20
  6. Step 6: Final answer
    x = 70,836.55

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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.