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Finding the Fourth Proportional to 14,082.88, 21,145.08 and 7,855.06

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Solution

The fourth proportional to 14,082.88, 21,145.08 and 7,855.06 is: 11,794.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,082.88 : 21,145.08 = 7,855.06 : x
  2. Step 2: Convert to fraction form
    14,082.88/21,145.08 = 7,855.06/x
  3. Step 3: Cross multiply
    14,082.88x = 21,145.08 × 7,855.06
  4. Step 4: Simplify right side
    14,082.88x = 166,095,766.38
  5. Step 5: Solve for x
    x = 166,095,766.38/14,082.88
  6. Step 6: Final answer
    x = 11,794.17

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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.