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Finding the Fourth Proportional to 222,391.25, 333,621.44 and 74,681.81

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Solution

The fourth proportional to 222,391.25, 333,621.44 and 74,681.81 is: 112,034.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,391.25 : 333,621.44 = 74,681.81 : x
  2. Step 2: Convert to fraction form
    222,391.25/333,621.44 = 74,681.81/x
  3. Step 3: Cross multiply
    222,391.25x = 333,621.44 × 74,681.81
  4. Step 4: Simplify right side
    222,391.25x = 24,915,452,994.01
  5. Step 5: Solve for x
    x = 24,915,452,994.01/222,391.25
  6. Step 6: Final answer
    x = 112,034.32

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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.