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Finding the Fourth Proportional to 9,393.86, 12,963.54 and 5,202.14

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Solution

The fourth proportional to 9,393.86, 12,963.54 and 5,202.14 is: 7,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,393.86 : 12,963.54 = 5,202.14 : x
  2. Step 2: Convert to fraction form
    9,393.86/12,963.54 = 5,202.14/x
  3. Step 3: Cross multiply
    9,393.86x = 12,963.54 × 5,202.14
  4. Step 4: Simplify right side
    9,393.86x = 67,438,149.98
  5. Step 5: Solve for x
    x = 67,438,149.98/9,393.86
  6. Step 6: Final answer
    x = 7,178.96

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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.