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Finding the Fourth Proportional to 325,631.60, 488,593.20 and 148,047.20

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Solution

The fourth proportional to 325,631.60, 488,593.20 and 148,047.20 is: 222,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,631.60 : 488,593.20 = 148,047.20 : x
  2. Step 2: Convert to fraction form
    325,631.60/488,593.20 = 148,047.20/x
  3. Step 3: Cross multiply
    325,631.60x = 488,593.20 × 148,047.20
  4. Step 4: Simplify right side
    325,631.60x = 72,334,855,199.04
  5. Step 5: Solve for x
    x = 72,334,855,199.04/325,631.60
  6. Step 6: Final answer
    x = 222,137.09

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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.