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Finding the Fourth Proportional to 18,462.84, 27,691.26 and 5,312.22

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Solution

The fourth proportional to 18,462.84, 27,691.26 and 5,312.22 is: 7,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.84 : 27,691.26 = 5,312.22 : x
  2. Step 2: Convert to fraction form
    18,462.84/27,691.26 = 5,312.22/x
  3. Step 3: Cross multiply
    18,462.84x = 27,691.26 × 5,312.22
  4. Step 4: Simplify right side
    18,462.84x = 147,102,065.20
  5. Step 5: Solve for x
    x = 147,102,065.20/18,462.84
  6. Step 6: Final answer
    x = 7,967.47

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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.