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Finding the Fourth Proportional to 17,423.40, 26,091.90 and 13,967.40

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Solution

The fourth proportional to 17,423.40, 26,091.90 and 13,967.40 is: 20,916.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,423.40 : 26,091.90 = 13,967.40 : x
  2. Step 2: Convert to fraction form
    17,423.40/26,091.90 = 13,967.40/x
  3. Step 3: Cross multiply
    17,423.40x = 26,091.90 × 13,967.40
  4. Step 4: Simplify right side
    17,423.40x = 364,436,004.06
  5. Step 5: Solve for x
    x = 364,436,004.06/17,423.40
  6. Step 6: Final answer
    x = 20,916.47

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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.