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Finding the Fourth Proportional to 8,739.99, 12,060.95 and 4,760.87

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Solution

The fourth proportional to 8,739.99, 12,060.95 and 4,760.87 is: 6,569.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.99 : 12,060.95 = 4,760.87 : x
  2. Step 2: Convert to fraction form
    8,739.99/12,060.95 = 4,760.87/x
  3. Step 3: Cross multiply
    8,739.99x = 12,060.95 × 4,760.87
  4. Step 4: Simplify right side
    8,739.99x = 57,420,530.92
  5. Step 5: Solve for x
    x = 57,420,530.92/8,739.99
  6. Step 6: Final answer
    x = 6,569.86

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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.