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Finding the Fourth Proportional to 29,568.80, 40,798.86 and 16,991.12

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Solution

The fourth proportional to 29,568.80, 40,798.86 and 16,991.12 is: 23,444.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,568.80 : 40,798.86 = 16,991.12 : x
  2. Step 2: Convert to fraction form
    29,568.80/40,798.86 = 16,991.12/x
  3. Step 3: Cross multiply
    29,568.80x = 40,798.86 × 16,991.12
  4. Step 4: Simplify right side
    29,568.80x = 693,218,364.40
  5. Step 5: Solve for x
    x = 693,218,364.40/29,568.80
  6. Step 6: Final answer
    x = 23,444.25

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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.