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Finding the Fourth Proportional to 17,706.50, 26,559.78 and 7,318.52

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Solution

The fourth proportional to 17,706.50, 26,559.78 and 7,318.52 is: 10,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,706.50 : 26,559.78 = 7,318.52 : x
  2. Step 2: Convert to fraction form
    17,706.50/26,559.78 = 7,318.52/x
  3. Step 3: Cross multiply
    17,706.50x = 26,559.78 × 7,318.52
  4. Step 4: Simplify right side
    17,706.50x = 194,378,281.13
  5. Step 5: Solve for x
    x = 194,378,281.13/17,706.50
  6. Step 6: Final answer
    x = 10,977.79

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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.