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Finding the Fourth Proportional to 222,635.52, 333,987.84 and 74,880

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Solution

The fourth proportional to 222,635.52, 333,987.84 and 74,880 is: 112,331.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,635.52 : 333,987.84 = 74,880 : x
  2. Step 2: Convert to fraction form
    222,635.52/333,987.84 = 74,880/x
  3. Step 3: Cross multiply
    222,635.52x = 333,987.84 × 74,880
  4. Step 4: Simplify right side
    222,635.52x = 25,009,009,459.20
  5. Step 5: Solve for x
    x = 25,009,009,459.20/222,635.52
  6. Step 6: Final answer
    x = 112,331.62

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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.