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Finding the Fourth Proportional to 717,818,195.22, 990,659,726.64 and 435,538,481.52

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Solution

The fourth proportional to 717,818,195.22, 990,659,726.64 and 435,538,481.52 is: 601,085,951.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,818,195.22 : 990,659,726.64 = 435,538,481.52 : x
  2. Step 2: Convert to fraction form
    717,818,195.22/990,659,726.64 = 435,538,481.52/x
  3. Step 3: Cross multiply
    717,818,195.22x = 990,659,726.64 × 435,538,481.52
  4. Step 4: Simplify right side
    717,818,195.22x = 431,470,433,043,803,840
  5. Step 5: Solve for x
    x = 431,470,433,043,803,840/717,818,195.22
  6. Step 6: Final answer
    x = 601,085,951.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.