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Finding the Fourth Proportional to 71,290.53, 98,405.49 and 41,087.91

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Solution

The fourth proportional to 71,290.53, 98,405.49 and 41,087.91 is: 56,715.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,290.53 : 98,405.49 = 41,087.91 : x
  2. Step 2: Convert to fraction form
    71,290.53/98,405.49 = 41,087.91/x
  3. Step 3: Cross multiply
    71,290.53x = 98,405.49 × 41,087.91
  4. Step 4: Simplify right side
    71,290.53x = 4,043,275,916.63
  5. Step 5: Solve for x
    x = 4,043,275,916.63/71,290.53
  6. Step 6: Final answer
    x = 56,715.47

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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.