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Finding the Fourth Proportional to 9,786.16, 13,502.32 and 5,808.16

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Solution

The fourth proportional to 9,786.16, 13,502.32 and 5,808.16 is: 8,013.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,786.16 : 13,502.32 = 5,808.16 : x
  2. Step 2: Convert to fraction form
    9,786.16/13,502.32 = 5,808.16/x
  3. Step 3: Cross multiply
    9,786.16x = 13,502.32 × 5,808.16
  4. Step 4: Simplify right side
    9,786.16x = 78,423,634.93
  5. Step 5: Solve for x
    x = 78,423,634.93/9,786.16
  6. Step 6: Final answer
    x = 8,013.73

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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.