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Finding the Fourth Proportional to 66,479.76, 99,485.55 and 41,531.56

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Solution

The fourth proportional to 66,479.76, 99,485.55 and 41,531.56 is: 62,151.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.76 : 99,485.55 = 41,531.56 : x
  2. Step 2: Convert to fraction form
    66,479.76/99,485.55 = 41,531.56/x
  3. Step 3: Cross multiply
    66,479.76x = 99,485.55 × 41,531.56
  4. Step 4: Simplify right side
    66,479.76x = 4,131,789,840.24
  5. Step 5: Solve for x
    x = 4,131,789,840.24/66,479.76
  6. Step 6: Final answer
    x = 62,151.09

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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.