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Finding the Fourth Proportional to 12,472.82, 18,710.16 and 3,707.68

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Solution

The fourth proportional to 12,472.82, 18,710.16 and 3,707.68 is: 5,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.82 : 18,710.16 = 3,707.68 : x
  2. Step 2: Convert to fraction form
    12,472.82/18,710.16 = 3,707.68/x
  3. Step 3: Cross multiply
    12,472.82x = 18,710.16 × 3,707.68
  4. Step 4: Simplify right side
    12,472.82x = 69,371,286.03
  5. Step 5: Solve for x
    x = 69,371,286.03/12,472.82
  6. Step 6: Final answer
    x = 5,561.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.