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Finding the Fourth Proportional to 77,190.44, 106,488.99 and 45,344.97

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Solution

The fourth proportional to 77,190.44, 106,488.99 and 45,344.97 is: 62,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,190.44 : 106,488.99 = 45,344.97 : x
  2. Step 2: Convert to fraction form
    77,190.44/106,488.99 = 45,344.97/x
  3. Step 3: Cross multiply
    77,190.44x = 106,488.99 × 45,344.97
  4. Step 4: Simplify right side
    77,190.44x = 4,828,740,056.88
  5. Step 5: Solve for x
    x = 4,828,740,056.88/77,190.44
  6. Step 6: Final answer
    x = 62,556.20

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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.