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Finding the Fourth Proportional to 18,891.65, 26,069.90 and 10,393.77

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Solution

The fourth proportional to 18,891.65, 26,069.90 and 10,393.77 is: 14,343.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.65 : 26,069.90 = 10,393.77 : x
  2. Step 2: Convert to fraction form
    18,891.65/26,069.90 = 10,393.77/x
  3. Step 3: Cross multiply
    18,891.65x = 26,069.90 × 10,393.77
  4. Step 4: Simplify right side
    18,891.65x = 270,964,492.55
  5. Step 5: Solve for x
    x = 270,964,492.55/18,891.65
  6. Step 6: Final answer
    x = 14,343.09

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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.