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Finding the Fourth Proportional to 15,595.53, 21,521.99 and 8,522.11

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Solution

The fourth proportional to 15,595.53, 21,521.99 and 8,522.11 is: 11,760.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.53 : 21,521.99 = 8,522.11 : x
  2. Step 2: Convert to fraction form
    15,595.53/21,521.99 = 8,522.11/x
  3. Step 3: Cross multiply
    15,595.53x = 21,521.99 × 8,522.11
  4. Step 4: Simplify right side
    15,595.53x = 183,412,615.98
  5. Step 5: Solve for x
    x = 183,412,615.98/15,595.53
  6. Step 6: Final answer
    x = 11,760.59

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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.