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Finding the Fourth Proportional to 71,274.88, 98,360.76 and 39,442.96

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Solution

The fourth proportional to 71,274.88, 98,360.76 and 39,442.96 is: 54,432.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,274.88 : 98,360.76 = 39,442.96 : x
  2. Step 2: Convert to fraction form
    71,274.88/98,360.76 = 39,442.96/x
  3. Step 3: Cross multiply
    71,274.88x = 98,360.76 × 39,442.96
  4. Step 4: Simplify right side
    71,274.88x = 3,879,639,522.25
  5. Step 5: Solve for x
    x = 3,879,639,522.25/71,274.88
  6. Step 6: Final answer
    x = 54,432.07

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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.