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Finding the Fourth Proportional to 71,367.48, 98,493.12 and 39,539.34

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Solution

The fourth proportional to 71,367.48, 98,493.12 and 39,539.34 is: 54,567.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,367.48 : 98,493.12 = 39,539.34 : x
  2. Step 2: Convert to fraction form
    71,367.48/98,493.12 = 39,539.34/x
  3. Step 3: Cross multiply
    71,367.48x = 98,493.12 × 39,539.34
  4. Step 4: Simplify right side
    71,367.48x = 3,894,352,959.34
  5. Step 5: Solve for x
    x = 3,894,352,959.34/71,367.48
  6. Step 6: Final answer
    x = 54,567.61

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1.5x scale

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.