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Finding the Fourth Proportional to 18,910.35, 28,368.27 and 7,063.11

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Solution

The fourth proportional to 18,910.35, 28,368.27 and 7,063.11 is: 10,595.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.35 : 28,368.27 = 7,063.11 : x
  2. Step 2: Convert to fraction form
    18,910.35/28,368.27 = 7,063.11/x
  3. Step 3: Cross multiply
    18,910.35x = 28,368.27 × 7,063.11
  4. Step 4: Simplify right side
    18,910.35x = 200,368,211.52
  5. Step 5: Solve for x
    x = 200,368,211.52/18,910.35
  6. Step 6: Final answer
    x = 10,595.69

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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.