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Finding the Fourth Proportional to 165,040,903.20, 247,023,270.78 and 165,040,903.20

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Solution

The fourth proportional to 165,040,903.20, 247,023,270.78 and 165,040,903.20 is: 247,023,270.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,040,903.20 : 247,023,270.78 = 165,040,903.20 : x
  2. Step 2: Convert to fraction form
    165,040,903.20/247,023,270.78 = 165,040,903.20/x
  3. Step 3: Cross multiply
    165,040,903.20x = 247,023,270.78 × 165,040,903.20
  4. Step 4: Simplify right side
    165,040,903.20x = 40,768,943,720,949,368
  5. Step 5: Solve for x
    x = 40,768,943,720,949,368/165,040,903.20
  6. Step 6: Final answer
    x = 247,023,270.78

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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.