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Finding the Fourth Proportional to 71,407.01, 98,544.87 and 39,573.86

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Solution

The fourth proportional to 71,407.01, 98,544.87 and 39,573.86 is: 54,613.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,407.01 : 98,544.87 = 39,573.86 : x
  2. Step 2: Convert to fraction form
    71,407.01/98,544.87 = 39,573.86/x
  3. Step 3: Cross multiply
    71,407.01x = 98,544.87 × 39,573.86
  4. Step 4: Simplify right side
    71,407.01x = 3,899,800,198.50
  5. Step 5: Solve for x
    x = 3,899,800,198.50/71,407.01
  6. Step 6: Final answer
    x = 54,613.69

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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.