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Finding the Fourth Proportional to 19,213.50, 26,514.63 and 10,381.50

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Solution

The fourth proportional to 19,213.50, 26,514.63 and 10,381.50 is: 14,326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.50 : 26,514.63 = 10,381.50 : x
  2. Step 2: Convert to fraction form
    19,213.50/26,514.63 = 10,381.50/x
  3. Step 3: Cross multiply
    19,213.50x = 26,514.63 × 10,381.50
  4. Step 4: Simplify right side
    19,213.50x = 275,261,631.35
  5. Step 5: Solve for x
    x = 275,261,631.35/19,213.50
  6. Step 6: Final answer
    x = 14,326.47

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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.