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Finding the Fourth Proportional to 18,697.31, 28,037.74 and 7,002.33

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Solution

The fourth proportional to 18,697.31, 28,037.74 and 7,002.33 is: 10,500.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.31 : 28,037.74 = 7,002.33 : x
  2. Step 2: Convert to fraction form
    18,697.31/28,037.74 = 7,002.33/x
  3. Step 3: Cross multiply
    18,697.31x = 28,037.74 × 7,002.33
  4. Step 4: Simplify right side
    18,697.31x = 196,329,507.93
  5. Step 5: Solve for x
    x = 196,329,507.93/18,697.31
  6. Step 6: Final answer
    x = 10,500.41

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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.