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Finding the Fourth Proportional to 16,615.91, 22,918.12 and 16,066.73

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Solution

The fourth proportional to 16,615.91, 22,918.12 and 16,066.73 is: 22,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,615.91 : 22,918.12 = 16,066.73 : x
  2. Step 2: Convert to fraction form
    16,615.91/22,918.12 = 16,066.73/x
  3. Step 3: Cross multiply
    16,615.91x = 22,918.12 × 16,066.73
  4. Step 4: Simplify right side
    16,615.91x = 368,219,246.15
  5. Step 5: Solve for x
    x = 368,219,246.15/16,615.91
  6. Step 6: Final answer
    x = 22,160.64

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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.