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Finding the Fourth Proportional to 216,926.91, 325,405.55 and 67,147.48

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Solution

The fourth proportional to 216,926.91, 325,405.55 and 67,147.48 is: 100,725.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,926.91 : 325,405.55 = 67,147.48 : x
  2. Step 2: Convert to fraction form
    216,926.91/325,405.55 = 67,147.48/x
  3. Step 3: Cross multiply
    216,926.91x = 325,405.55 × 67,147.48
  4. Step 4: Simplify right side
    216,926.91x = 21,850,163,235.14
  5. Step 5: Solve for x
    x = 21,850,163,235.14/216,926.91
  6. Step 6: Final answer
    x = 100,725.92

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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.