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Finding the Fourth Proportional to 20,653.29, 30,961.17 and 9,557.01

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Solution

The fourth proportional to 20,653.29, 30,961.17 and 9,557.01 is: 14,326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.29 : 30,961.17 = 9,557.01 : x
  2. Step 2: Convert to fraction form
    20,653.29/30,961.17 = 9,557.01/x
  3. Step 3: Cross multiply
    20,653.29x = 30,961.17 × 9,557.01
  4. Step 4: Simplify right side
    20,653.29x = 295,896,211.30
  5. Step 5: Solve for x
    x = 295,896,211.30/20,653.29
  6. Step 6: Final answer
    x = 14,326.83

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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.