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Finding the Fourth Proportional to 67,655.79, 101,451.69 and 20,252.57

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Solution

The fourth proportional to 67,655.79, 101,451.69 and 20,252.57 is: 30,369.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,655.79 : 101,451.69 = 20,252.57 : x
  2. Step 2: Convert to fraction form
    67,655.79/101,451.69 = 20,252.57/x
  3. Step 3: Cross multiply
    67,655.79x = 101,451.69 × 20,252.57
  4. Step 4: Simplify right side
    67,655.79x = 2,054,656,946.08
  5. Step 5: Solve for x
    x = 2,054,656,946.08/67,655.79
  6. Step 6: Final answer
    x = 30,369.27

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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.