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Finding the Fourth Proportional to 61,851.39, 85,354.92 and 34,993.32

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Solution

The fourth proportional to 61,851.39, 85,354.92 and 34,993.32 is: 48,290.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,851.39 : 85,354.92 = 34,993.32 : x
  2. Step 2: Convert to fraction form
    61,851.39/85,354.92 = 34,993.32/x
  3. Step 3: Cross multiply
    61,851.39x = 85,354.92 × 34,993.32
  4. Step 4: Simplify right side
    61,851.39x = 2,986,852,029.13
  5. Step 5: Solve for x
    x = 2,986,852,029.13/61,851.39
  6. Step 6: Final answer
    x = 48,290.78

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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.