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Finding the Fourth Proportional to 18,697.70, 28,046.49 and 6,852.35

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Solution

The fourth proportional to 18,697.70, 28,046.49 and 6,852.35 is: 10,278.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.70 : 28,046.49 = 6,852.35 : x
  2. Step 2: Convert to fraction form
    18,697.70/28,046.49 = 6,852.35/x
  3. Step 3: Cross multiply
    18,697.70x = 28,046.49 × 6,852.35
  4. Step 4: Simplify right side
    18,697.70x = 192,184,435.87
  5. Step 5: Solve for x
    x = 192,184,435.87/18,697.70
  6. Step 6: Final answer
    x = 10,278.51

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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.