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Finding the Fourth Proportional to 16,662.80, 22,994.66 and 9,109.16

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Solution

The fourth proportional to 16,662.80, 22,994.66 and 9,109.16 is: 12,570.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,662.80 : 22,994.66 = 9,109.16 : x
  2. Step 2: Convert to fraction form
    16,662.80/22,994.66 = 9,109.16/x
  3. Step 3: Cross multiply
    16,662.80x = 22,994.66 × 9,109.16
  4. Step 4: Simplify right side
    16,662.80x = 209,461,979.88
  5. Step 5: Solve for x
    x = 209,461,979.88/16,662.80
  6. Step 6: Final answer
    x = 12,570.64

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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.