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Finding the Fourth Proportional to 9,351.94, 12,960.28 and 9,174.53

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Solution

The fourth proportional to 9,351.94, 12,960.28 and 9,174.53 is: 12,714.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,351.94 : 12,960.28 = 9,174.53 : x
  2. Step 2: Convert to fraction form
    9,351.94/12,960.28 = 9,174.53/x
  3. Step 3: Cross multiply
    9,351.94x = 12,960.28 × 9,174.53
  4. Step 4: Simplify right side
    9,351.94x = 118,904,477.67
  5. Step 5: Solve for x
    x = 118,904,477.67/9,351.94
  6. Step 6: Final answer
    x = 12,714.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.