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Finding the Fourth Proportional to 73,802.20, 110,703.30 and 51,640.60

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Solution

The fourth proportional to 73,802.20, 110,703.30 and 51,640.60 is: 77,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,802.20 : 110,703.30 = 51,640.60 : x
  2. Step 2: Convert to fraction form
    73,802.20/110,703.30 = 51,640.60/x
  3. Step 3: Cross multiply
    73,802.20x = 110,703.30 × 51,640.60
  4. Step 4: Simplify right side
    73,802.20x = 5,716,784,833.98
  5. Step 5: Solve for x
    x = 5,716,784,833.98/73,802.20
  6. Step 6: Final answer
    x = 77,460.90

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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.