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Finding the Fourth Proportional to 40,607.58, 60,917.09 and 12,529.91

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Solution

The fourth proportional to 40,607.58, 60,917.09 and 12,529.91 is: 18,796.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,607.58 : 60,917.09 = 12,529.91 : x
  2. Step 2: Convert to fraction form
    40,607.58/60,917.09 = 12,529.91/x
  3. Step 3: Cross multiply
    40,607.58x = 60,917.09 × 12,529.91
  4. Step 4: Simplify right side
    40,607.58x = 763,285,744.81
  5. Step 5: Solve for x
    x = 763,285,744.81/40,607.58
  6. Step 6: Final answer
    x = 18,796.63

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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.