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Finding the Fourth Proportional to 7,012.92, 10,520.82 and 2,852.92

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Solution

The fourth proportional to 7,012.92, 10,520.82 and 2,852.92 is: 4,279.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.92 : 10,520.82 = 2,852.92 : x
  2. Step 2: Convert to fraction form
    7,012.92/10,520.82 = 2,852.92/x
  3. Step 3: Cross multiply
    7,012.92x = 10,520.82 × 2,852.92
  4. Step 4: Simplify right side
    7,012.92x = 30,015,031.49
  5. Step 5: Solve for x
    x = 30,015,031.49/7,012.92
  6. Step 6: Final answer
    x = 4,279.96

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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.