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Finding the Fourth Proportional to 324,826,785.60, 487,240,178.40 and 252,267,374.40

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Solution

The fourth proportional to 324,826,785.60, 487,240,178.40 and 252,267,374.40 is: 378,401,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,826,785.60 : 487,240,178.40 = 252,267,374.40 : x
  2. Step 2: Convert to fraction form
    324,826,785.60/487,240,178.40 = 252,267,374.40/x
  3. Step 3: Cross multiply
    324,826,785.60x = 487,240,178.40 × 252,267,374.40
  4. Step 4: Simplify right side
    324,826,785.60x = 122,914,800,507,155,584
  5. Step 5: Solve for x
    x = 122,914,800,507,155,584/324,826,785.60
  6. Step 6: Final answer
    x = 378,401,061.60

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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.