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Finding the Fourth Proportional to 471,990.39, 651,351.21 and 268,045.56

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Solution

The fourth proportional to 471,990.39, 651,351.21 and 268,045.56 is: 369,905.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,990.39 : 651,351.21 = 268,045.56 : x
  2. Step 2: Convert to fraction form
    471,990.39/651,351.21 = 268,045.56/x
  3. Step 3: Cross multiply
    471,990.39x = 651,351.21 × 268,045.56
  4. Step 4: Simplify right side
    471,990.39x = 174,591,799,841.13
  5. Step 5: Solve for x
    x = 174,591,799,841.13/471,990.39
  6. Step 6: Final answer
    x = 369,905.41

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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.