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Finding the Fourth Proportional to 451,298.59, 675,871.70 and 261,357.64

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Solution

The fourth proportional to 451,298.59, 675,871.70 and 261,357.64 is: 391,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,298.59 : 675,871.70 = 261,357.64 : x
  2. Step 2: Convert to fraction form
    451,298.59/675,871.70 = 261,357.64/x
  3. Step 3: Cross multiply
    451,298.59x = 675,871.70 × 261,357.64
  4. Step 4: Simplify right side
    451,298.59x = 176,644,229,458.32
  5. Step 5: Solve for x
    x = 176,644,229,458.32/451,298.59
  6. Step 6: Final answer
    x = 391,413.21

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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.