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Finding the Fourth Proportional to 552,932.78, 762,654.17 and 369,078.65

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Solution

The fourth proportional to 552,932.78, 762,654.17 and 369,078.65 is: 509,066.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,932.78 : 762,654.17 = 369,078.65 : x
  2. Step 2: Convert to fraction form
    552,932.78/762,654.17 = 369,078.65/x
  3. Step 3: Cross multiply
    552,932.78x = 762,654.17 × 369,078.65
  4. Step 4: Simplify right side
    552,932.78x = 281,479,367,943.81
  5. Step 5: Solve for x
    x = 281,479,367,943.81/552,932.78
  6. Step 6: Final answer
    x = 509,066.16

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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.