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Finding the Fourth Proportional to 71,650.03, 98,879.32 and 39,825.08

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Solution

The fourth proportional to 71,650.03, 98,879.32 and 39,825.08 is: 54,959.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,650.03 : 98,879.32 = 39,825.08 : x
  2. Step 2: Convert to fraction form
    71,650.03/98,879.32 = 39,825.08/x
  3. Step 3: Cross multiply
    71,650.03x = 98,879.32 × 39,825.08
  4. Step 4: Simplify right side
    71,650.03x = 3,937,876,829.35
  5. Step 5: Solve for x
    x = 3,937,876,829.35/71,650.03
  6. Step 6: Final answer
    x = 54,959.88

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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.