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Finding the Fourth Proportional to 12,525.75, 17,285.81 and 6,936.75

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Solution

The fourth proportional to 12,525.75, 17,285.81 and 6,936.75 is: 9,572.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,525.75 : 17,285.81 = 6,936.75 : x
  2. Step 2: Convert to fraction form
    12,525.75/17,285.81 = 6,936.75/x
  3. Step 3: Cross multiply
    12,525.75x = 17,285.81 × 6,936.75
  4. Step 4: Simplify right side
    12,525.75x = 119,907,307.83
  5. Step 5: Solve for x
    x = 119,907,307.83/12,525.75
  6. Step 6: Final answer
    x = 9,572.86

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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.