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Finding the Fourth Proportional to 15,595.70, 21,522.13 and 8,522.12

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Solution

The fourth proportional to 15,595.70, 21,522.13 and 8,522.12 is: 11,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.70 : 21,522.13 = 8,522.12 : x
  2. Step 2: Convert to fraction form
    15,595.70/21,522.13 = 8,522.12/x
  3. Step 3: Cross multiply
    15,595.70x = 21,522.13 × 8,522.12
  4. Step 4: Simplify right side
    15,595.70x = 183,414,261.25
  5. Step 5: Solve for x
    x = 183,414,261.25/15,595.70
  6. Step 6: Final answer
    x = 11,760.56

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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.