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Finding the Fourth Proportional to 17,991.87, 24,809.94 and 15,482.49

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Solution

The fourth proportional to 17,991.87, 24,809.94 and 15,482.49 is: 21,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.87 : 24,809.94 = 15,482.49 : x
  2. Step 2: Convert to fraction form
    17,991.87/24,809.94 = 15,482.49/x
  3. Step 3: Cross multiply
    17,991.87x = 24,809.94 × 15,482.49
  4. Step 4: Simplify right side
    17,991.87x = 384,119,647.95
  5. Step 5: Solve for x
    x = 384,119,647.95/17,991.87
  6. Step 6: Final answer
    x = 21,349.62

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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.