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Finding the Fourth Proportional to 777,919.50, 1,167,076.17 and 216,954

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Solution

The fourth proportional to 777,919.50, 1,167,076.17 and 216,954 is: 325,485.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,919.50 : 1,167,076.17 = 216,954 : x
  2. Step 2: Convert to fraction form
    777,919.50/1,167,076.17 = 216,954/x
  3. Step 3: Cross multiply
    777,919.50x = 1,167,076.17 × 216,954
  4. Step 4: Simplify right side
    777,919.50x = 253,201,843,386.18
  5. Step 5: Solve for x
    x = 253,201,843,386.18/777,919.50
  6. Step 6: Final answer
    x = 325,485.92

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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.