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Finding the Fourth Proportional to 71,310.88, 98,453.82 and 45,828.64

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Solution

The fourth proportional to 71,310.88, 98,453.82 and 45,828.64 is: 63,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,310.88 : 98,453.82 = 45,828.64 : x
  2. Step 2: Convert to fraction form
    71,310.88/98,453.82 = 45,828.64/x
  3. Step 3: Cross multiply
    71,310.88x = 98,453.82 × 45,828.64
  4. Step 4: Simplify right side
    71,310.88x = 4,512,004,673.40
  5. Step 5: Solve for x
    x = 4,512,004,673.40/71,310.88
  6. Step 6: Final answer
    x = 63,272.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.