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Finding the Fourth Proportional to 45,966.56, 68,892.36 and 19,640.48

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Solution

The fourth proportional to 45,966.56, 68,892.36 and 19,640.48 is: 29,436.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,966.56 : 68,892.36 = 19,640.48 : x
  2. Step 2: Convert to fraction form
    45,966.56/68,892.36 = 19,640.48/x
  3. Step 3: Cross multiply
    45,966.56x = 68,892.36 × 19,640.48
  4. Step 4: Simplify right side
    45,966.56x = 1,353,079,018.73
  5. Step 5: Solve for x
    x = 1,353,079,018.73/45,966.56
  6. Step 6: Final answer
    x = 29,436.16

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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.