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Finding the Fourth Proportional to 385,674.73, 532,260.65 and 222,357.80

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Solution

The fourth proportional to 385,674.73, 532,260.65 and 222,357.80 is: 306,870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,674.73 : 532,260.65 = 222,357.80 : x
  2. Step 2: Convert to fraction form
    385,674.73/532,260.65 = 222,357.80/x
  3. Step 3: Cross multiply
    385,674.73x = 532,260.65 × 222,357.80
  4. Step 4: Simplify right side
    385,674.73x = 118,352,306,048.78
  5. Step 5: Solve for x
    x = 118,352,306,048.78/385,674.73
  6. Step 6: Final answer
    x = 306,870.79

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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.