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Finding the Fourth Proportional to 625,969,101.60, 938,953,652.40 and 396,197,632.80

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Solution

The fourth proportional to 625,969,101.60, 938,953,652.40 and 396,197,632.80 is: 594,296,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,969,101.60 : 938,953,652.40 = 396,197,632.80 : x
  2. Step 2: Convert to fraction form
    625,969,101.60/938,953,652.40 = 396,197,632.80/x
  3. Step 3: Cross multiply
    625,969,101.60x = 938,953,652.40 × 396,197,632.80
  4. Step 4: Simplify right side
    625,969,101.60x = 372,011,214,389,794,048
  5. Step 5: Solve for x
    x = 372,011,214,389,794,048/625,969,101.60
  6. Step 6: Final answer
    x = 594,296,449.20

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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.