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Finding the Fourth Proportional to 17,911.80, 26,838.90 and 14,974.20

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Solution

The fourth proportional to 17,911.80, 26,838.90 and 14,974.20 is: 22,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.80 : 26,838.90 = 14,974.20 : x
  2. Step 2: Convert to fraction form
    17,911.80/26,838.90 = 14,974.20/x
  3. Step 3: Cross multiply
    17,911.80x = 26,838.90 × 14,974.20
  4. Step 4: Simplify right side
    17,911.80x = 401,891,056.38
  5. Step 5: Solve for x
    x = 401,891,056.38/17,911.80
  6. Step 6: Final answer
    x = 22,437.22

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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.