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Finding the Fourth Proportional to 9,658.84, 13,323.12 and 5,879.32

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Solution

The fourth proportional to 9,658.84, 13,323.12 and 5,879.32 is: 8,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,658.84 : 13,323.12 = 5,879.32 : x
  2. Step 2: Convert to fraction form
    9,658.84/13,323.12 = 5,879.32/x
  3. Step 3: Cross multiply
    9,658.84x = 13,323.12 × 5,879.32
  4. Step 4: Simplify right side
    9,658.84x = 78,330,885.88
  5. Step 5: Solve for x
    x = 78,330,885.88/9,658.84
  6. Step 6: Final answer
    x = 8,109.76

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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.