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Finding the Fourth Proportional to 18,697.46, 25,804.98 and 11,892.12

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Solution

The fourth proportional to 18,697.46, 25,804.98 and 11,892.12 is: 16,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.46 : 25,804.98 = 11,892.12 : x
  2. Step 2: Convert to fraction form
    18,697.46/25,804.98 = 11,892.12/x
  3. Step 3: Cross multiply
    18,697.46x = 25,804.98 × 11,892.12
  4. Step 4: Simplify right side
    18,697.46x = 306,875,821.99
  5. Step 5: Solve for x
    x = 306,875,821.99/18,697.46
  6. Step 6: Final answer
    x = 16,412.70

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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.