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Finding the Fourth Proportional to 442,040.40, 662,623.20 and 217,216.80

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Solution

The fourth proportional to 442,040.40, 662,623.20 and 217,216.80 is: 325,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,040.40 : 662,623.20 = 217,216.80 : x
  2. Step 2: Convert to fraction form
    442,040.40/662,623.20 = 217,216.80/x
  3. Step 3: Cross multiply
    442,040.40x = 662,623.20 × 217,216.80
  4. Step 4: Simplify right side
    442,040.40x = 143,932,891,109.76
  5. Step 5: Solve for x
    x = 143,932,891,109.76/442,040.40
  6. Step 6: Final answer
    x = 325,610.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.