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Finding the Fourth Proportional to 228,794.18, 315,629.17 and 143,958.02

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Solution

The fourth proportional to 228,794.18, 315,629.17 and 143,958.02 is: 198,594.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,794.18 : 315,629.17 = 143,958.02 : x
  2. Step 2: Convert to fraction form
    228,794.18/315,629.17 = 143,958.02/x
  3. Step 3: Cross multiply
    228,794.18x = 315,629.17 × 143,958.02
  4. Step 4: Simplify right side
    228,794.18x = 45,437,348,069.51
  5. Step 5: Solve for x
    x = 45,437,348,069.51/228,794.18
  6. Step 6: Final answer
    x = 198,594.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.