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Finding the Fourth Proportional to 17,307.74, 25,940.18 and 8,415.80

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Solution

The fourth proportional to 17,307.74, 25,940.18 and 8,415.80 is: 12,613.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,307.74 : 25,940.18 = 8,415.80 : x
  2. Step 2: Convert to fraction form
    17,307.74/25,940.18 = 8,415.80/x
  3. Step 3: Cross multiply
    17,307.74x = 25,940.18 × 8,415.80
  4. Step 4: Simplify right side
    17,307.74x = 218,307,195.06
  5. Step 5: Solve for x
    x = 218,307,195.06/17,307.74
  6. Step 6: Final answer
    x = 12,613.27

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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.