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Finding the Fourth Proportional to 74,499.66, 111,822.93 and 54,722.70

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Solution

The fourth proportional to 74,499.66, 111,822.93 and 54,722.70 is: 82,137.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,499.66 : 111,822.93 = 54,722.70 : x
  2. Step 2: Convert to fraction form
    74,499.66/111,822.93 = 54,722.70/x
  3. Step 3: Cross multiply
    74,499.66x = 111,822.93 × 54,722.70
  4. Step 4: Simplify right side
    74,499.66x = 6,119,252,651.51
  5. Step 5: Solve for x
    x = 6,119,252,651.51/74,499.66
  6. Step 6: Final answer
    x = 82,137.99

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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.