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Finding the Fourth Proportional to 18,396.61, 27,595.94 and 5,247.93

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Solution

The fourth proportional to 18,396.61, 27,595.94 and 5,247.93 is: 7,872.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.61 : 27,595.94 = 5,247.93 : x
  2. Step 2: Convert to fraction form
    18,396.61/27,595.94 = 5,247.93/x
  3. Step 3: Cross multiply
    18,396.61x = 27,595.94 × 5,247.93
  4. Step 4: Simplify right side
    18,396.61x = 144,821,561.40
  5. Step 5: Solve for x
    x = 144,821,561.40/18,396.61
  6. Step 6: Final answer
    x = 7,872.19

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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.