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Finding the Fourth Proportional to 28,057.92, 42,091.13 and 8,334.01

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Solution

The fourth proportional to 28,057.92, 42,091.13 and 8,334.01 is: 12,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.92 : 42,091.13 = 8,334.01 : x
  2. Step 2: Convert to fraction form
    28,057.92/42,091.13 = 8,334.01/x
  3. Step 3: Cross multiply
    28,057.92x = 42,091.13 × 8,334.01
  4. Step 4: Simplify right side
    28,057.92x = 350,787,898.33
  5. Step 5: Solve for x
    x = 350,787,898.33/28,057.92
  6. Step 6: Final answer
    x = 12,502.28

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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.