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Finding the Fourth Proportional to 109,940.72, 151,721.57 and 62,193.11

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Solution

The fourth proportional to 109,940.72, 151,721.57 and 62,193.11 is: 85,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,940.72 : 151,721.57 = 62,193.11 : x
  2. Step 2: Convert to fraction form
    109,940.72/151,721.57 = 62,193.11/x
  3. Step 3: Cross multiply
    109,940.72x = 151,721.57 × 62,193.11
  4. Step 4: Simplify right side
    109,940.72x = 9,436,035,689.26
  5. Step 5: Solve for x
    x = 9,436,035,689.26/109,940.72
  6. Step 6: Final answer
    x = 85,828.40

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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.