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Finding the Fourth Proportional to 621,871.28, 932,707.80 and 222,437.60

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Solution

The fourth proportional to 621,871.28, 932,707.80 and 222,437.60 is: 333,620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,871.28 : 932,707.80 = 222,437.60 : x
  2. Step 2: Convert to fraction form
    621,871.28/932,707.80 = 222,437.60/x
  3. Step 3: Cross multiply
    621,871.28x = 932,707.80 × 222,437.60
  4. Step 4: Simplify right side
    621,871.28x = 207,469,284,533.28
  5. Step 5: Solve for x
    x = 207,469,284,533.28/621,871.28
  6. Step 6: Final answer
    x = 333,620.95

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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.