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Finding the Fourth Proportional to 9,169.65, 12,653.91 and 5,392.08

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Solution

The fourth proportional to 9,169.65, 12,653.91 and 5,392.08 is: 7,440.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,169.65 : 12,653.91 = 5,392.08 : x
  2. Step 2: Convert to fraction form
    9,169.65/12,653.91 = 5,392.08/x
  3. Step 3: Cross multiply
    9,169.65x = 12,653.91 × 5,392.08
  4. Step 4: Simplify right side
    9,169.65x = 68,230,895.03
  5. Step 5: Solve for x
    x = 68,230,895.03/9,169.65
  6. Step 6: Final answer
    x = 7,440.95

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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.