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Finding the Fourth Proportional to 13,958.67, 20,892.51 and 10,259.94

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Solution

The fourth proportional to 13,958.67, 20,892.51 and 10,259.94 is: 15,356.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.67 : 20,892.51 = 10,259.94 : x
  2. Step 2: Convert to fraction form
    13,958.67/20,892.51 = 10,259.94/x
  3. Step 3: Cross multiply
    13,958.67x = 20,892.51 × 10,259.94
  4. Step 4: Simplify right side
    13,958.67x = 214,355,899.05
  5. Step 5: Solve for x
    x = 214,355,899.05/13,958.67
  6. Step 6: Final answer
    x = 15,356.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.