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Finding the Fourth Proportional to 16,917.70, 25,376.55 and 7,683.70

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Solution

The fourth proportional to 16,917.70, 25,376.55 and 7,683.70 is: 11,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,917.70 : 25,376.55 = 7,683.70 : x
  2. Step 2: Convert to fraction form
    16,917.70/25,376.55 = 7,683.70/x
  3. Step 3: Cross multiply
    16,917.70x = 25,376.55 × 7,683.70
  4. Step 4: Simplify right side
    16,917.70x = 194,985,797.24
  5. Step 5: Solve for x
    x = 194,985,797.24/16,917.70
  6. Step 6: Final answer
    x = 11,525.55

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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.