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Finding the Fourth Proportional to 214,563.42, 321,845.40 and 74,322.03

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Solution

The fourth proportional to 214,563.42, 321,845.40 and 74,322.03 is: 111,483.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,563.42 : 321,845.40 = 74,322.03 : x
  2. Step 2: Convert to fraction form
    214,563.42/321,845.40 = 74,322.03/x
  3. Step 3: Cross multiply
    214,563.42x = 321,845.40 × 74,322.03
  4. Step 4: Simplify right side
    214,563.42x = 23,920,203,474.16
  5. Step 5: Solve for x
    x = 23,920,203,474.16/214,563.42
  6. Step 6: Final answer
    x = 111,483.14

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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.