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Finding the Fourth Proportional to 9,313.92, 12,853.08 and 5,122.44

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Solution

The fourth proportional to 9,313.92, 12,853.08 and 5,122.44 is: 7,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,313.92 : 12,853.08 = 5,122.44 : x
  2. Step 2: Convert to fraction form
    9,313.92/12,853.08 = 5,122.44/x
  3. Step 3: Cross multiply
    9,313.92x = 12,853.08 × 5,122.44
  4. Step 4: Simplify right side
    9,313.92x = 65,839,131.12
  5. Step 5: Solve for x
    x = 65,839,131.12/9,313.92
  6. Step 6: Final answer
    x = 7,068.90

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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.