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Finding the Fourth Proportional to 18,655.89, 25,747.37 and 10,698.11

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Solution

The fourth proportional to 18,655.89, 25,747.37 and 10,698.11 is: 14,764.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.89 : 25,747.37 = 10,698.11 : x
  2. Step 2: Convert to fraction form
    18,655.89/25,747.37 = 10,698.11/x
  3. Step 3: Cross multiply
    18,655.89x = 25,747.37 × 10,698.11
  4. Step 4: Simplify right side
    18,655.89x = 275,448,014.24
  5. Step 5: Solve for x
    x = 275,448,014.24/18,655.89
  6. Step 6: Final answer
    x = 14,764.67

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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.