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Finding the Fourth Proportional to 18,697.75, 25,801.10 and 10,313.71

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Solution

The fourth proportional to 18,697.75, 25,801.10 and 10,313.71 is: 14,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.75 : 25,801.10 = 10,313.71 : x
  2. Step 2: Convert to fraction form
    18,697.75/25,801.10 = 10,313.71/x
  3. Step 3: Cross multiply
    18,697.75x = 25,801.10 × 10,313.71
  4. Step 4: Simplify right side
    18,697.75x = 266,104,985.69
  5. Step 5: Solve for x
    x = 266,104,985.69/18,697.75
  6. Step 6: Final answer
    x = 14,231.93

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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.