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Finding the Fourth Proportional to 216,966.56, 325,480.61 and 67,218.62

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Solution

The fourth proportional to 216,966.56, 325,480.61 and 67,218.62 is: 100,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,966.56 : 325,480.61 = 67,218.62 : x
  2. Step 2: Convert to fraction form
    216,966.56/325,480.61 = 67,218.62/x
  3. Step 3: Cross multiply
    216,966.56x = 325,480.61 × 67,218.62
  4. Step 4: Simplify right side
    216,966.56x = 21,878,355,981.60
  5. Step 5: Solve for x
    x = 21,878,355,981.60/216,966.56
  6. Step 6: Final answer
    x = 100,837.46

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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.