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Finding the Fourth Proportional to 8,793.92, 12,135.52 and 4,815.12

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Solution

The fourth proportional to 8,793.92, 12,135.52 and 4,815.12 is: 6,644.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.92 : 12,135.52 = 4,815.12 : x
  2. Step 2: Convert to fraction form
    8,793.92/12,135.52 = 4,815.12/x
  3. Step 3: Cross multiply
    8,793.92x = 12,135.52 × 4,815.12
  4. Step 4: Simplify right side
    8,793.92x = 58,433,985.06
  5. Step 5: Solve for x
    x = 58,433,985.06/8,793.92
  6. Step 6: Final answer
    x = 6,644.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.