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Finding the Fourth Proportional to 16,681.82, 25,010.96 and 8,355.87

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Solution

The fourth proportional to 16,681.82, 25,010.96 and 8,355.87 is: 12,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,681.82 : 25,010.96 = 8,355.87 : x
  2. Step 2: Convert to fraction form
    16,681.82/25,010.96 = 8,355.87/x
  3. Step 3: Cross multiply
    16,681.82x = 25,010.96 × 8,355.87
  4. Step 4: Simplify right side
    16,681.82x = 208,988,288.56
  5. Step 5: Solve for x
    x = 208,988,288.56/16,681.82
  6. Step 6: Final answer
    x = 12,527.91

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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.