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Finding the Fourth Proportional to 472,662.80, 708,780.25 and 135,626.05

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Solution

The fourth proportional to 472,662.80, 708,780.25 and 135,626.05 is: 203,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,662.80 : 708,780.25 = 135,626.05 : x
  2. Step 2: Convert to fraction form
    472,662.80/708,780.25 = 135,626.05/x
  3. Step 3: Cross multiply
    472,662.80x = 708,780.25 × 135,626.05
  4. Step 4: Simplify right side
    472,662.80x = 96,129,065,625.51
  5. Step 5: Solve for x
    x = 96,129,065,625.51/472,662.80
  6. Step 6: Final answer
    x = 203,377.68

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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.