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Finding the Fourth Proportional to 18,965.19, 26,173.41 and 13,952.43

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Solution

The fourth proportional to 18,965.19, 26,173.41 and 13,952.43 is: 19,255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.19 : 26,173.41 = 13,952.43 : x
  2. Step 2: Convert to fraction form
    18,965.19/26,173.41 = 13,952.43/x
  3. Step 3: Cross multiply
    18,965.19x = 26,173.41 × 13,952.43
  4. Step 4: Simplify right side
    18,965.19x = 365,182,670.89
  5. Step 5: Solve for x
    x = 365,182,670.89/18,965.19
  6. Step 6: Final answer
    x = 19,255.42

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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.