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Finding the Fourth Proportional to 11,394.68, 15,724.04 and 6,359.31

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Solution

The fourth proportional to 11,394.68, 15,724.04 and 6,359.31 is: 8,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,394.68 : 15,724.04 = 6,359.31 : x
  2. Step 2: Convert to fraction form
    11,394.68/15,724.04 = 6,359.31/x
  3. Step 3: Cross multiply
    11,394.68x = 15,724.04 × 6,359.31
  4. Step 4: Simplify right side
    11,394.68x = 99,994,013.02
  5. Step 5: Solve for x
    x = 99,994,013.02/11,394.68
  6. Step 6: Final answer
    x = 8,775.50

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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.