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Finding the Fourth Proportional to 2,385.13, 3,576.47 and 998.09

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Solution

The fourth proportional to 2,385.13, 3,576.47 and 998.09 is: 1,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.13 : 3,576.47 = 998.09 : x
  2. Step 2: Convert to fraction form
    2,385.13/3,576.47 = 998.09/x
  3. Step 3: Cross multiply
    2,385.13x = 3,576.47 × 998.09
  4. Step 4: Simplify right side
    2,385.13x = 3,569,623.56
  5. Step 5: Solve for x
    x = 3,569,623.56/2,385.13
  6. Step 6: Final answer
    x = 1,496.62

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1.5x scale

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.