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Finding the Fourth Proportional to 12,472.98, 18,712.98 and 3,708.24

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Solution

The fourth proportional to 12,472.98, 18,712.98 and 3,708.24 is: 5,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.98 : 18,712.98 = 3,708.24 : x
  2. Step 2: Convert to fraction form
    12,472.98/18,712.98 = 3,708.24/x
  3. Step 3: Cross multiply
    12,472.98x = 18,712.98 × 3,708.24
  4. Step 4: Simplify right side
    12,472.98x = 69,392,220.96
  5. Step 5: Solve for x
    x = 69,392,220.96/12,472.98
  6. Step 6: Final answer
    x = 5,563.40

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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.