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Finding the Fourth Proportional to 72,993.97, 100,714.43 and 44,312.89

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Solution

The fourth proportional to 72,993.97, 100,714.43 and 44,312.89 is: 61,141.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,993.97 : 100,714.43 = 44,312.89 : x
  2. Step 2: Convert to fraction form
    72,993.97/100,714.43 = 44,312.89/x
  3. Step 3: Cross multiply
    72,993.97x = 100,714.43 × 44,312.89
  4. Step 4: Simplify right side
    72,993.97x = 4,462,947,236.44
  5. Step 5: Solve for x
    x = 4,462,947,236.44/72,993.97
  6. Step 6: Final answer
    x = 61,141.31

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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.