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Finding the Fourth Proportional to 18,697.48, 28,041.42 and 5,546.74

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Solution

The fourth proportional to 18,697.48, 28,041.42 and 5,546.74 is: 8,318.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.48 : 28,041.42 = 5,546.74 : x
  2. Step 2: Convert to fraction form
    18,697.48/28,041.42 = 5,546.74/x
  3. Step 3: Cross multiply
    18,697.48x = 28,041.42 × 5,546.74
  4. Step 4: Simplify right side
    18,697.48x = 155,538,465.97
  5. Step 5: Solve for x
    x = 155,538,465.97/18,697.48
  6. Step 6: Final answer
    x = 8,318.69

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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.