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Finding the Fourth Proportional to 264,822.40, 397,233.60 and 140,406.40

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Solution

The fourth proportional to 264,822.40, 397,233.60 and 140,406.40 is: 210,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,822.40 : 397,233.60 = 140,406.40 : x
  2. Step 2: Convert to fraction form
    264,822.40/397,233.60 = 140,406.40/x
  3. Step 3: Cross multiply
    264,822.40x = 397,233.60 × 140,406.40
  4. Step 4: Simplify right side
    264,822.40x = 55,774,139,735.04
  5. Step 5: Solve for x
    x = 55,774,139,735.04/264,822.40
  6. Step 6: Final answer
    x = 210,609.60

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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.