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Finding the Fourth Proportional to 69,218.48, 103,836.40 and 27,093.12

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Solution

The fourth proportional to 69,218.48, 103,836.40 and 27,093.12 is: 40,643.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,218.48 : 103,836.40 = 27,093.12 : x
  2. Step 2: Convert to fraction form
    69,218.48/103,836.40 = 27,093.12/x
  3. Step 3: Cross multiply
    69,218.48x = 103,836.40 × 27,093.12
  4. Step 4: Simplify right side
    69,218.48x = 2,813,252,045.57
  5. Step 5: Solve for x
    x = 2,813,252,045.57/69,218.48
  6. Step 6: Final answer
    x = 40,643.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.