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Finding the Fourth Proportional to 13,805.90, 19,053.90 and 10,279.16

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Solution

The fourth proportional to 13,805.90, 19,053.90 and 10,279.16 is: 14,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.90 : 19,053.90 = 10,279.16 : x
  2. Step 2: Convert to fraction form
    13,805.90/19,053.90 = 10,279.16/x
  3. Step 3: Cross multiply
    13,805.90x = 19,053.90 × 10,279.16
  4. Step 4: Simplify right side
    13,805.90x = 195,858,086.72
  5. Step 5: Solve for x
    x = 195,858,086.72/13,805.90
  6. Step 6: Final answer
    x = 14,186.55

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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.