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Finding the Fourth Proportional to 325,468.64, 488,280.89 and 135,823.51

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Solution

The fourth proportional to 325,468.64, 488,280.89 and 135,823.51 is: 203,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,468.64 : 488,280.89 = 135,823.51 : x
  2. Step 2: Convert to fraction form
    325,468.64/488,280.89 = 135,823.51/x
  3. Step 3: Cross multiply
    325,468.64x = 488,280.89 × 135,823.51
  4. Step 4: Simplify right side
    325,468.64x = 66,320,024,345.72
  5. Step 5: Solve for x
    x = 66,320,024,345.72/325,468.64
  6. Step 6: Final answer
    x = 203,767.79

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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.