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Finding the Fourth Proportional to 216,911.77, 325,246.95 and 67,109.56

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Solution

The fourth proportional to 216,911.77, 325,246.95 and 67,109.56 is: 100,627.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,911.77 : 325,246.95 = 67,109.56 : x
  2. Step 2: Convert to fraction form
    216,911.77/325,246.95 = 67,109.56/x
  3. Step 3: Cross multiply
    216,911.77x = 325,246.95 × 67,109.56
  4. Step 4: Simplify right side
    216,911.77x = 21,827,179,705.84
  5. Step 5: Solve for x
    x = 21,827,179,705.84/216,911.77
  6. Step 6: Final answer
    x = 100,627.00

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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.