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Finding the Fourth Proportional to 18,814.97, 25,965.16 and 10,637.93

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Solution

The fourth proportional to 18,814.97, 25,965.16 and 10,637.93 is: 14,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.97 : 25,965.16 = 10,637.93 : x
  2. Step 2: Convert to fraction form
    18,814.97/25,965.16 = 10,637.93/x
  3. Step 3: Cross multiply
    18,814.97x = 25,965.16 × 10,637.93
  4. Step 4: Simplify right side
    18,814.97x = 276,215,554.52
  5. Step 5: Solve for x
    x = 276,215,554.52/18,814.97
  6. Step 6: Final answer
    x = 14,680.63

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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.