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Finding the Fourth Proportional to 8,793.99, 12,135.15 and 4,815.15

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Solution

The fourth proportional to 8,793.99, 12,135.15 and 4,815.15 is: 6,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.99 : 12,135.15 = 4,815.15 : x
  2. Step 2: Convert to fraction form
    8,793.99/12,135.15 = 4,815.15/x
  3. Step 3: Cross multiply
    8,793.99x = 12,135.15 × 4,815.15
  4. Step 4: Simplify right side
    8,793.99x = 58,432,567.52
  5. Step 5: Solve for x
    x = 58,432,567.52/8,793.99
  6. Step 6: Final answer
    x = 6,644.60

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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.