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Finding the Fourth Proportional to 30,392.87, 41,943.78 and 16,967.43

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Solution

The fourth proportional to 30,392.87, 41,943.78 and 16,967.43 is: 23,415.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.87 : 41,943.78 = 16,967.43 : x
  2. Step 2: Convert to fraction form
    30,392.87/41,943.78 = 16,967.43/x
  3. Step 3: Cross multiply
    30,392.87x = 41,943.78 × 16,967.43
  4. Step 4: Simplify right side
    30,392.87x = 711,678,151.09
  5. Step 5: Solve for x
    x = 711,678,151.09/30,392.87
  6. Step 6: Final answer
    x = 23,415.96

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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.