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Finding the Fourth Proportional to 9,767.99, 13,475.36 and 5,786.84

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Solution

The fourth proportional to 9,767.99, 13,475.36 and 5,786.84 is: 7,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,767.99 : 13,475.36 = 5,786.84 : x
  2. Step 2: Convert to fraction form
    9,767.99/13,475.36 = 5,786.84/x
  3. Step 3: Cross multiply
    9,767.99x = 13,475.36 × 5,786.84
  4. Step 4: Simplify right side
    9,767.99x = 77,979,800.42
  5. Step 5: Solve for x
    x = 77,979,800.42/9,767.99
  6. Step 6: Final answer
    x = 7,983.20

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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.