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Finding the Fourth Proportional to 5,611.48, 7,747.45 and 5,020.99

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Solution

The fourth proportional to 5,611.48, 7,747.45 and 5,020.99 is: 6,932.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.48 : 7,747.45 = 5,020.99 : x
  2. Step 2: Convert to fraction form
    5,611.48/7,747.45 = 5,020.99/x
  3. Step 3: Cross multiply
    5,611.48x = 7,747.45 × 5,020.99
  4. Step 4: Simplify right side
    5,611.48x = 38,899,837.05
  5. Step 5: Solve for x
    x = 38,899,837.05/5,611.48
  6. Step 6: Final answer
    x = 6,932.19

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1.5x scale

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.