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Finding the Fourth Proportional to 18,356.61, 27,534.94 and 4,505.61

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Solution

The fourth proportional to 18,356.61, 27,534.94 and 4,505.61 is: 6,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.61 : 27,534.94 = 4,505.61 : x
  2. Step 2: Convert to fraction form
    18,356.61/27,534.94 = 4,505.61/x
  3. Step 3: Cross multiply
    18,356.61x = 27,534.94 × 4,505.61
  4. Step 4: Simplify right side
    18,356.61x = 124,061,701.01
  5. Step 5: Solve for x
    x = 124,061,701.01/18,356.61
  6. Step 6: Final answer
    x = 6,758.42

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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.