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Finding the Fourth Proportional to 18,626.76, 25,697.64 and 10,664.76

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Solution

The fourth proportional to 18,626.76, 25,697.64 and 10,664.76 is: 14,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.76 : 25,697.64 = 10,664.76 : x
  2. Step 2: Convert to fraction form
    18,626.76/25,697.64 = 10,664.76/x
  3. Step 3: Cross multiply
    18,626.76x = 25,697.64 × 10,664.76
  4. Step 4: Simplify right side
    18,626.76x = 274,059,163.17
  5. Step 5: Solve for x
    x = 274,059,163.17/18,626.76
  6. Step 6: Final answer
    x = 14,713.20

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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.