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Finding the Fourth Proportional to 763,837.20, 1,067,972.40 and 763,837.20

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Solution

The fourth proportional to 763,837.20, 1,067,972.40 and 763,837.20 is: 1,067,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,837.20 : 1,067,972.40 = 763,837.20 : x
  2. Step 2: Convert to fraction form
    763,837.20/1,067,972.40 = 763,837.20/x
  3. Step 3: Cross multiply
    763,837.20x = 1,067,972.40 × 763,837.20
  4. Step 4: Simplify right side
    763,837.20x = 815,757,047,693.28
  5. Step 5: Solve for x
    x = 815,757,047,693.28/763,837.20
  6. Step 6: Final answer
    x = 1,067,972.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.