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Finding the Fourth Proportional to 16,911.40, 23,727.80 and 16,911.40

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Solution

The fourth proportional to 16,911.40, 23,727.80 and 16,911.40 is: 23,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,911.40 : 23,727.80 = 16,911.40 : x
  2. Step 2: Convert to fraction form
    16,911.40/23,727.80 = 16,911.40/x
  3. Step 3: Cross multiply
    16,911.40x = 23,727.80 × 16,911.40
  4. Step 4: Simplify right side
    16,911.40x = 401,270,316.92
  5. Step 5: Solve for x
    x = 401,270,316.92/16,911.40
  6. Step 6: Final answer
    x = 23,727.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.