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Finding the Fourth Proportional to 16,916.42, 25,380.64 and 7,555.58

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Solution

The fourth proportional to 16,916.42, 25,380.64 and 7,555.58 is: 11,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,916.42 : 25,380.64 = 7,555.58 : x
  2. Step 2: Convert to fraction form
    16,916.42/25,380.64 = 7,555.58/x
  3. Step 3: Cross multiply
    16,916.42x = 25,380.64 × 7,555.58
  4. Step 4: Simplify right side
    16,916.42x = 191,765,455.97
  5. Step 5: Solve for x
    x = 191,765,455.97/16,916.42
  6. Step 6: Final answer
    x = 11,336.05

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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.