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Finding the Fourth Proportional to 18,322.42, 27,483.70 and 4,471.42

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Solution

The fourth proportional to 18,322.42, 27,483.70 and 4,471.42 is: 6,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.42 : 27,483.70 = 4,471.42 : x
  2. Step 2: Convert to fraction form
    18,322.42/27,483.70 = 4,471.42/x
  3. Step 3: Cross multiply
    18,322.42x = 27,483.70 × 4,471.42
  4. Step 4: Simplify right side
    18,322.42x = 122,891,143.50
  5. Step 5: Solve for x
    x = 122,891,143.50/18,322.42
  6. Step 6: Final answer
    x = 6,707.15

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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.