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Finding the Fourth Proportional to 40,991.59, 61,487.46 and 11,409.43

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Solution

The fourth proportional to 40,991.59, 61,487.46 and 11,409.43 is: 17,114.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,991.59 : 61,487.46 = 11,409.43 : x
  2. Step 2: Convert to fraction form
    40,991.59/61,487.46 = 11,409.43/x
  3. Step 3: Cross multiply
    40,991.59x = 61,487.46 × 11,409.43
  4. Step 4: Simplify right side
    40,991.59x = 701,536,870.75
  5. Step 5: Solve for x
    x = 701,536,870.75/40,991.59
  6. Step 6: Final answer
    x = 17,114.17

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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.