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Finding the Fourth Proportional to 312,766.77, 431,607.65 and 185,366.73

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Solution

The fourth proportional to 312,766.77, 431,607.65 and 185,366.73 is: 255,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,766.77 : 431,607.65 = 185,366.73 : x
  2. Step 2: Convert to fraction form
    312,766.77/431,607.65 = 185,366.73/x
  3. Step 3: Cross multiply
    312,766.77x = 431,607.65 × 185,366.73
  4. Step 4: Simplify right side
    312,766.77x = 80,005,697,796.65
  5. Step 5: Solve for x
    x = 80,005,697,796.65/312,766.77
  6. Step 6: Final answer
    x = 255,799.87

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1.5x scale

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.