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Finding the Fourth Proportional to 12,626.74, 18,915.88 and 7,063.25

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Solution

The fourth proportional to 12,626.74, 18,915.88 and 7,063.25 is: 10,581.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.74 : 18,915.88 = 7,063.25 : x
  2. Step 2: Convert to fraction form
    12,626.74/18,915.88 = 7,063.25/x
  3. Step 3: Cross multiply
    12,626.74x = 18,915.88 × 7,063.25
  4. Step 4: Simplify right side
    12,626.74x = 133,607,596.82
  5. Step 5: Solve for x
    x = 133,607,596.82/12,626.74
  6. Step 6: Final answer
    x = 10,581.33

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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.