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Finding the Fourth Proportional to 16,917.60, 25,376.40 and 16,658.40

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Solution

The fourth proportional to 16,917.60, 25,376.40 and 16,658.40 is: 24,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,917.60 : 25,376.40 = 16,658.40 : x
  2. Step 2: Convert to fraction form
    16,917.60/25,376.40 = 16,658.40/x
  3. Step 3: Cross multiply
    16,917.60x = 25,376.40 × 16,658.40
  4. Step 4: Simplify right side
    16,917.60x = 422,730,221.76
  5. Step 5: Solve for x
    x = 422,730,221.76/16,917.60
  6. Step 6: Final answer
    x = 24,987.60

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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.