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Finding the Fourth Proportional to 218,942.80, 328,414.20 and 183,513.40

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Solution

The fourth proportional to 218,942.80, 328,414.20 and 183,513.40 is: 275,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,942.80 : 328,414.20 = 183,513.40 : x
  2. Step 2: Convert to fraction form
    218,942.80/328,414.20 = 183,513.40/x
  3. Step 3: Cross multiply
    218,942.80x = 328,414.20 × 183,513.40
  4. Step 4: Simplify right side
    218,942.80x = 60,268,406,450.28
  5. Step 5: Solve for x
    x = 60,268,406,450.28/218,942.80
  6. Step 6: Final answer
    x = 275,270.10

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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.