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Finding the Fourth Proportional to 44,486.56, 66,660.72 and 28,036

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Solution

The fourth proportional to 44,486.56, 66,660.72 and 28,036 is: 42,010.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,486.56 : 66,660.72 = 28,036 : x
  2. Step 2: Convert to fraction form
    44,486.56/66,660.72 = 28,036/x
  3. Step 3: Cross multiply
    44,486.56x = 66,660.72 × 28,036
  4. Step 4: Simplify right side
    44,486.56x = 1,868,899,945.92
  5. Step 5: Solve for x
    x = 1,868,899,945.92/44,486.56
  6. Step 6: Final answer
    x = 42,010.44

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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.