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Finding the Fourth Proportional to 216,805.60, 325,239 and 67,059

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Solution

The fourth proportional to 216,805.60, 325,239 and 67,059 is: 100,597.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,805.60 : 325,239 = 67,059 : x
  2. Step 2: Convert to fraction form
    216,805.60/325,239 = 67,059/x
  3. Step 3: Cross multiply
    216,805.60x = 325,239 × 67,059
  4. Step 4: Simplify right side
    216,805.60x = 21,810,202,101
  5. Step 5: Solve for x
    x = 21,810,202,101/216,805.60
  6. Step 6: Final answer
    x = 100,597.96

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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.