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Finding the Fourth Proportional to 9,396.32, 12,940.48 and 9,192.16

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Solution

The fourth proportional to 9,396.32, 12,940.48 and 9,192.16 is: 12,659.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,396.32 : 12,940.48 = 9,192.16 : x
  2. Step 2: Convert to fraction form
    9,396.32/12,940.48 = 9,192.16/x
  3. Step 3: Cross multiply
    9,396.32x = 12,940.48 × 9,192.16
  4. Step 4: Simplify right side
    9,396.32x = 118,950,962.64
  5. Step 5: Solve for x
    x = 118,950,962.64/9,396.32
  6. Step 6: Final answer
    x = 12,659.31

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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.