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Finding the Fourth Proportional to 699,691,796.01, 965,581,288.92 and 398,262,386.52

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Solution

The fourth proportional to 699,691,796.01, 965,581,288.92 and 398,262,386.52 is: 549,605,856.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,691,796.01 : 965,581,288.92 = 398,262,386.52 : x
  2. Step 2: Convert to fraction form
    699,691,796.01/965,581,288.92 = 398,262,386.52/x
  3. Step 3: Cross multiply
    699,691,796.01x = 965,581,288.92 × 398,262,386.52
  4. Step 4: Simplify right side
    699,691,796.01x = 384,554,708,504,336,768
  5. Step 5: Solve for x
    x = 384,554,708,504,336,768/699,691,796.01
  6. Step 6: Final answer
    x = 549,605,856.03

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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.