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Finding the Fourth Proportional to 326,449.32, 488,656.36 and 251,374.44

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Solution

The fourth proportional to 326,449.32, 488,656.36 and 251,374.44 is: 376,278.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,449.32 : 488,656.36 = 251,374.44 : x
  2. Step 2: Convert to fraction form
    326,449.32/488,656.36 = 251,374.44/x
  3. Step 3: Cross multiply
    326,449.32x = 488,656.36 × 251,374.44
  4. Step 4: Simplify right side
    326,449.32x = 122,835,718,847.44
  5. Step 5: Solve for x
    x = 122,835,718,847.44/326,449.32
  6. Step 6: Final answer
    x = 376,278.07

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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.