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Finding the Fourth Proportional to 9,168.58, 12,653.13 and 5,190.58

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Solution

The fourth proportional to 9,168.58, 12,653.13 and 5,190.58 is: 7,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.58 : 12,653.13 = 5,190.58 : x
  2. Step 2: Convert to fraction form
    9,168.58/12,653.13 = 5,190.58/x
  3. Step 3: Cross multiply
    9,168.58x = 12,653.13 × 5,190.58
  4. Step 4: Simplify right side
    9,168.58x = 65,677,083.52
  5. Step 5: Solve for x
    x = 65,677,083.52/9,168.58
  6. Step 6: Final answer
    x = 7,163.28

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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.