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Finding the Fourth Proportional to 710,014,229.73, 979,800,841.72 and 396,751,017.87

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Solution

The fourth proportional to 710,014,229.73, 979,800,841.72 and 396,751,017.87 is: 547,505,901.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,014,229.73 : 979,800,841.72 = 396,751,017.87 : x
  2. Step 2: Convert to fraction form
    710,014,229.73/979,800,841.72 = 396,751,017.87/x
  3. Step 3: Cross multiply
    710,014,229.73x = 979,800,841.72 × 396,751,017.87
  4. Step 4: Simplify right side
    710,014,229.73x = 388,736,981,262,292,800
  5. Step 5: Solve for x
    x = 388,736,981,262,292,800/710,014,229.73
  6. Step 6: Final answer
    x = 547,505,901.97

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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.