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Finding the Fourth Proportional to 18,745.76, 25,868.80 and 10,362.08

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Solution

The fourth proportional to 18,745.76, 25,868.80 and 10,362.08 is: 14,299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.76 : 25,868.80 = 10,362.08 : x
  2. Step 2: Convert to fraction form
    18,745.76/25,868.80 = 10,362.08/x
  3. Step 3: Cross multiply
    18,745.76x = 25,868.80 × 10,362.08
  4. Step 4: Simplify right side
    18,745.76x = 268,054,575.10
  5. Step 5: Solve for x
    x = 268,054,575.10/18,745.76
  6. Step 6: Final answer
    x = 14,299.48

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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.