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Finding the Fourth Proportional to 18,697.01, 28,023.98 and 7,591.50

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Solution

The fourth proportional to 18,697.01, 28,023.98 and 7,591.50 is: 11,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.01 : 28,023.98 = 7,591.50 : x
  2. Step 2: Convert to fraction form
    18,697.01/28,023.98 = 7,591.50/x
  3. Step 3: Cross multiply
    18,697.01x = 28,023.98 × 7,591.50
  4. Step 4: Simplify right side
    18,697.01x = 212,744,006.21
  5. Step 5: Solve for x
    x = 212,744,006.21/18,697.01
  6. Step 6: Final answer
    x = 11,378.51

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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.