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Finding the Fourth Proportional to 268,091.68, 400,131.56 and 263,663.14

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Solution

The fourth proportional to 268,091.68, 400,131.56 and 263,663.14 is: 393,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,091.68 : 400,131.56 = 263,663.14 : x
  2. Step 2: Convert to fraction form
    268,091.68/400,131.56 = 263,663.14/x
  3. Step 3: Cross multiply
    268,091.68x = 400,131.56 × 263,663.14
  4. Step 4: Simplify right side
    268,091.68x = 105,499,943,522.70
  5. Step 5: Solve for x
    x = 105,499,943,522.70/268,091.68
  6. Step 6: Final answer
    x = 393,521.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.