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Finding the Fourth Proportional to 51,190.66, 76,739.21 and 43,343.74

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Solution

The fourth proportional to 51,190.66, 76,739.21 and 43,343.74 is: 64,976.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,190.66 : 76,739.21 = 43,343.74 : x
  2. Step 2: Convert to fraction form
    51,190.66/76,739.21 = 43,343.74/x
  3. Step 3: Cross multiply
    51,190.66x = 76,739.21 × 43,343.74
  4. Step 4: Simplify right side
    51,190.66x = 3,326,164,219.94
  5. Step 5: Solve for x
    x = 3,326,164,219.94/51,190.66
  6. Step 6: Final answer
    x = 64,976.00

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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.