Home / 20,111,850.20-30,167,775.30-18,852,138.20

Finding the Fourth Proportional to 20,111,850.20, 30,167,775.30 and 18,852,138.20

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Solution

The fourth proportional to 20,111,850.20, 30,167,775.30 and 18,852,138.20 is: 28,278,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,850.20 : 30,167,775.30 = 18,852,138.20 : x
  2. Step 2: Convert to fraction form
    20,111,850.20/30,167,775.30 = 18,852,138.20/x
  3. Step 3: Cross multiply
    20,111,850.20x = 30,167,775.30 × 18,852,138.20
  4. Step 4: Simplify right side
    20,111,850.20x = 568,727,069,142,146.50
  5. Step 5: Solve for x
    x = 568,727,069,142,146.50/20,111,850.20
  6. Step 6: Final answer
    x = 28,278,207.30

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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.