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Finding the Fourth Proportional to 472,086.39, 708,260.99 and 205,870.35

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Solution

The fourth proportional to 472,086.39, 708,260.99 and 205,870.35 is: 308,862.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,086.39 : 708,260.99 = 205,870.35 : x
  2. Step 2: Convert to fraction form
    472,086.39/708,260.99 = 205,870.35/x
  3. Step 3: Cross multiply
    472,086.39x = 708,260.99 × 205,870.35
  4. Step 4: Simplify right side
    472,086.39x = 145,809,936,873.30
  5. Step 5: Solve for x
    x = 145,809,936,873.30/472,086.39
  6. Step 6: Final answer
    x = 308,862.83

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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.