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Finding the Fourth Proportional to 29,761.86, 44,642.80 and 8,985.36

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Solution

The fourth proportional to 29,761.86, 44,642.80 and 8,985.36 is: 13,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,761.86 : 44,642.80 = 8,985.36 : x
  2. Step 2: Convert to fraction form
    29,761.86/44,642.80 = 8,985.36/x
  3. Step 3: Cross multiply
    29,761.86x = 44,642.80 × 8,985.36
  4. Step 4: Simplify right side
    29,761.86x = 401,131,629.41
  5. Step 5: Solve for x
    x = 401,131,629.41/29,761.86
  6. Step 6: Final answer
    x = 13,478.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.