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Finding the Fourth Proportional to 18,716.99, 25,829.19 and 10,650.45

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Solution

The fourth proportional to 18,716.99, 25,829.19 and 10,650.45 is: 14,697.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.99 : 25,829.19 = 10,650.45 : x
  2. Step 2: Convert to fraction form
    18,716.99/25,829.19 = 10,650.45/x
  3. Step 3: Cross multiply
    18,716.99x = 25,829.19 × 10,650.45
  4. Step 4: Simplify right side
    18,716.99x = 275,092,496.64
  5. Step 5: Solve for x
    x = 275,092,496.64/18,716.99
  6. Step 6: Final answer
    x = 14,697.48

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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.