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Finding the Fourth Proportional to 29,991.69, 44,997.26 and 8,931.91

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Solution

The fourth proportional to 29,991.69, 44,997.26 and 8,931.91 is: 13,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,991.69 : 44,997.26 = 8,931.91 : x
  2. Step 2: Convert to fraction form
    29,991.69/44,997.26 = 8,931.91/x
  3. Step 3: Cross multiply
    29,991.69x = 44,997.26 × 8,931.91
  4. Step 4: Simplify right side
    29,991.69x = 401,911,319.41
  5. Step 5: Solve for x
    x = 401,911,319.41/29,991.69
  6. Step 6: Final answer
    x = 13,400.76

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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.