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Finding the Fourth Proportional to 710,014,228.73, 979,800,840.34 and 396,751,016.87

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Solution

The fourth proportional to 710,014,228.73, 979,800,840.34 and 396,751,016.87 is: 547,505,900.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,014,228.73 : 979,800,840.34 = 396,751,016.87 : x
  2. Step 2: Convert to fraction form
    710,014,228.73/979,800,840.34 = 396,751,016.87/x
  3. Step 3: Cross multiply
    710,014,228.73x = 979,800,840.34 × 396,751,016.87
  4. Step 4: Simplify right side
    710,014,228.73x = 388,736,979,734,975,552
  5. Step 5: Solve for x
    x = 388,736,979,734,975,552/710,014,228.73
  6. Step 6: Final answer
    x = 547,505,900.59

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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.