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Finding the Fourth Proportional to 325,610.40, 488,415.60 and 148,463.40

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Solution

The fourth proportional to 325,610.40, 488,415.60 and 148,463.40 is: 222,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,610.40 : 488,415.60 = 148,463.40 : x
  2. Step 2: Convert to fraction form
    325,610.40/488,415.60 = 148,463.40/x
  3. Step 3: Cross multiply
    325,610.40x = 488,415.60 × 148,463.40
  4. Step 4: Simplify right side
    325,610.40x = 72,511,840,589.04
  5. Step 5: Solve for x
    x = 72,511,840,589.04/325,610.40
  6. Step 6: Final answer
    x = 222,695.10

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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.