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Finding the Fourth Proportional to 30,395.01, 41,942.09 and 16,782.17

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Solution

The fourth proportional to 30,395.01, 41,942.09 and 16,782.17 is: 23,157.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,395.01 : 41,942.09 = 16,782.17 : x
  2. Step 2: Convert to fraction form
    30,395.01/41,942.09 = 16,782.17/x
  3. Step 3: Cross multiply
    30,395.01x = 41,942.09 × 16,782.17
  4. Step 4: Simplify right side
    30,395.01x = 703,879,284.54
  5. Step 5: Solve for x
    x = 703,879,284.54/30,395.01
  6. Step 6: Final answer
    x = 23,157.73

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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.