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Finding the Fourth Proportional to 272,705.52, 409,076.90 and 92,717.66

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Solution

The fourth proportional to 272,705.52, 409,076.90 and 92,717.66 is: 139,082.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,705.52 : 409,076.90 = 92,717.66 : x
  2. Step 2: Convert to fraction form
    272,705.52/409,076.90 = 92,717.66/x
  3. Step 3: Cross multiply
    272,705.52x = 409,076.90 × 92,717.66
  4. Step 4: Simplify right side
    272,705.52x = 37,928,652,928.05
  5. Step 5: Solve for x
    x = 37,928,652,928.05/272,705.52
  6. Step 6: Final answer
    x = 139,082.82

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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.