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Finding the Fourth Proportional to 96,390.72, 133,020.84 and 52,787.11

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Solution

The fourth proportional to 96,390.72, 133,020.84 and 52,787.11 is: 72,847.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,390.72 : 133,020.84 = 52,787.11 : x
  2. Step 2: Convert to fraction form
    96,390.72/133,020.84 = 52,787.11/x
  3. Step 3: Cross multiply
    96,390.72x = 133,020.84 × 52,787.11
  4. Step 4: Simplify right side
    96,390.72x = 7,021,785,118.54
  5. Step 5: Solve for x
    x = 7,021,785,118.54/96,390.72
  6. Step 6: Final answer
    x = 72,847.11

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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.