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Finding the Fourth Proportional to 9,190.53, 12,678.98 and 7,193.07

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Solution

The fourth proportional to 9,190.53, 12,678.98 and 7,193.07 is: 9,923.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.53 : 12,678.98 = 7,193.07 : x
  2. Step 2: Convert to fraction form
    9,190.53/12,678.98 = 7,193.07/x
  3. Step 3: Cross multiply
    9,190.53x = 12,678.98 × 7,193.07
  4. Step 4: Simplify right side
    9,190.53x = 91,200,754.70
  5. Step 5: Solve for x
    x = 91,200,754.70/9,190.53
  6. Step 6: Final answer
    x = 9,923.34

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Double scale
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Similar ratio
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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.