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Finding the Fourth Proportional to 18,697.25, 25,800.41 and 10,313.21

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Solution

The fourth proportional to 18,697.25, 25,800.41 and 10,313.21 is: 14,231.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.25 : 25,800.41 = 10,313.21 : x
  2. Step 2: Convert to fraction form
    18,697.25/25,800.41 = 10,313.21/x
  3. Step 3: Cross multiply
    18,697.25x = 25,800.41 × 10,313.21
  4. Step 4: Simplify right side
    18,697.25x = 266,084,994.85
  5. Step 5: Solve for x
    x = 266,084,994.85/18,697.25
  6. Step 6: Final answer
    x = 14,231.24

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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.