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Finding the Fourth Proportional to 43,991.92, 65,991.66 and 14,409.64

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Solution

The fourth proportional to 43,991.92, 65,991.66 and 14,409.64 is: 21,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,991.92 : 65,991.66 = 14,409.64 : x
  2. Step 2: Convert to fraction form
    43,991.92/65,991.66 = 14,409.64/x
  3. Step 3: Cross multiply
    43,991.92x = 65,991.66 × 14,409.64
  4. Step 4: Simplify right side
    43,991.92x = 950,916,063.60
  5. Step 5: Solve for x
    x = 950,916,063.60/43,991.92
  6. Step 6: Final answer
    x = 21,615.70

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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.