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Finding the Fourth Proportional to 73,029.72, 100,780.92 and 39,495.72

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Solution

The fourth proportional to 73,029.72, 100,780.92 and 39,495.72 is: 54,504.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,029.72 : 100,780.92 = 39,495.72 : x
  2. Step 2: Convert to fraction form
    73,029.72/100,780.92 = 39,495.72/x
  3. Step 3: Cross multiply
    73,029.72x = 100,780.92 × 39,495.72
  4. Step 4: Simplify right side
    73,029.72x = 3,980,414,997.66
  5. Step 5: Solve for x
    x = 3,980,414,997.66/73,029.72
  6. Step 6: Final answer
    x = 54,504.04

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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.