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Finding the Fourth Proportional to 67,128.84, 100,630.35 and 22,724.52

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Solution

The fourth proportional to 67,128.84, 100,630.35 and 22,724.52 is: 34,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,128.84 : 100,630.35 = 22,724.52 : x
  2. Step 2: Convert to fraction form
    67,128.84/100,630.35 = 22,724.52/x
  3. Step 3: Cross multiply
    67,128.84x = 100,630.35 × 22,724.52
  4. Step 4: Simplify right side
    67,128.84x = 2,286,776,401.18
  5. Step 5: Solve for x
    x = 2,286,776,401.18/67,128.84
  6. Step 6: Final answer
    x = 34,065.48

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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.