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Finding the Fourth Proportional to 16,686.67, 25,032.77 and 7,916.80

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Solution

The fourth proportional to 16,686.67, 25,032.77 and 7,916.80 is: 11,876.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,686.67 : 25,032.77 = 7,916.80 : x
  2. Step 2: Convert to fraction form
    16,686.67/25,032.77 = 7,916.80/x
  3. Step 3: Cross multiply
    16,686.67x = 25,032.77 × 7,916.80
  4. Step 4: Simplify right side
    16,686.67x = 198,179,433.54
  5. Step 5: Solve for x
    x = 198,179,433.54/16,686.67
  6. Step 6: Final answer
    x = 11,876.51

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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.