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Finding the Fourth Proportional to 9,762.42, 13,472.13 and 5,286.21

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Solution

The fourth proportional to 9,762.42, 13,472.13 and 5,286.21 is: 7,294.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,762.42 : 13,472.13 = 5,286.21 : x
  2. Step 2: Convert to fraction form
    9,762.42/13,472.13 = 5,286.21/x
  3. Step 3: Cross multiply
    9,762.42x = 13,472.13 × 5,286.21
  4. Step 4: Simplify right side
    9,762.42x = 71,216,508.33
  5. Step 5: Solve for x
    x = 71,216,508.33/9,762.42
  6. Step 6: Final answer
    x = 7,294.96

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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.