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Finding the Fourth Proportional to 274,585.20, 411,916.20 and 116,812.40

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Solution

The fourth proportional to 274,585.20, 411,916.20 and 116,812.40 is: 175,234.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,585.20 : 411,916.20 = 116,812.40 : x
  2. Step 2: Convert to fraction form
    274,585.20/411,916.20 = 116,812.40/x
  3. Step 3: Cross multiply
    274,585.20x = 411,916.20 × 116,812.40
  4. Step 4: Simplify right side
    274,585.20x = 48,116,919,920.88
  5. Step 5: Solve for x
    x = 48,116,919,920.88/274,585.20
  6. Step 6: Final answer
    x = 175,234.94

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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.