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Finding the Fourth Proportional to 18,809.84, 25,963.44 and 11,642.24

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Solution

The fourth proportional to 18,809.84, 25,963.44 and 11,642.24 is: 16,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.84 : 25,963.44 = 11,642.24 : x
  2. Step 2: Convert to fraction form
    18,809.84/25,963.44 = 11,642.24/x
  3. Step 3: Cross multiply
    18,809.84x = 25,963.44 × 11,642.24
  4. Step 4: Simplify right side
    18,809.84x = 302,272,599.71
  5. Step 5: Solve for x
    x = 302,272,599.71/18,809.84
  6. Step 6: Final answer
    x = 16,069.92

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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.