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Finding the Fourth Proportional to 12,794.90, 17,653.89 and 7,205.90

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Solution

The fourth proportional to 12,794.90, 17,653.89 and 7,205.90 is: 9,942.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,794.90 : 17,653.89 = 7,205.90 : x
  2. Step 2: Convert to fraction form
    12,794.90/17,653.89 = 7,205.90/x
  3. Step 3: Cross multiply
    12,794.90x = 17,653.89 × 7,205.90
  4. Step 4: Simplify right side
    12,794.90x = 127,212,165.95
  5. Step 5: Solve for x
    x = 127,212,165.95/12,794.90
  6. Step 6: Final answer
    x = 9,942.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.