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Finding the Fourth Proportional to 72,993.72, 100,714.08 and 44,312.64

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Solution

The fourth proportional to 72,993.72, 100,714.08 and 44,312.64 is: 61,140.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,993.72 : 100,714.08 = 44,312.64 : x
  2. Step 2: Convert to fraction form
    72,993.72/100,714.08 = 44,312.64/x
  3. Step 3: Cross multiply
    72,993.72x = 100,714.08 × 44,312.64
  4. Step 4: Simplify right side
    72,993.72x = 4,462,906,769.97
  5. Step 5: Solve for x
    x = 4,462,906,769.97/72,993.72
  6. Step 6: Final answer
    x = 61,140.97

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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.