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Finding the Fourth Proportional to 69,066.52, 103,599.79 and 21,685.16

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Solution

The fourth proportional to 69,066.52, 103,599.79 and 21,685.16 is: 32,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,066.52 : 103,599.79 = 21,685.16 : x
  2. Step 2: Convert to fraction form
    69,066.52/103,599.79 = 21,685.16/x
  3. Step 3: Cross multiply
    69,066.52x = 103,599.79 × 21,685.16
  4. Step 4: Simplify right side
    69,066.52x = 2,246,578,226.90
  5. Step 5: Solve for x
    x = 2,246,578,226.90/69,066.52
  6. Step 6: Final answer
    x = 32,527.75

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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.