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Finding the Fourth Proportional to 18,726.87, 25,840.01 and 11,069.08

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Solution

The fourth proportional to 18,726.87, 25,840.01 and 11,069.08 is: 15,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.87 : 25,840.01 = 11,069.08 : x
  2. Step 2: Convert to fraction form
    18,726.87/25,840.01 = 11,069.08/x
  3. Step 3: Cross multiply
    18,726.87x = 25,840.01 × 11,069.08
  4. Step 4: Simplify right side
    18,726.87x = 286,025,173.64
  5. Step 5: Solve for x
    x = 286,025,173.64/18,726.87
  6. Step 6: Final answer
    x = 15,273.52

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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.