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Finding the Fourth Proportional to 403,847.60, 605,115.30 and 336,925.40

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Solution

The fourth proportional to 403,847.60, 605,115.30 and 336,925.40 is: 504,840.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,847.60 : 605,115.30 = 336,925.40 : x
  2. Step 2: Convert to fraction form
    403,847.60/605,115.30 = 336,925.40/x
  3. Step 3: Cross multiply
    403,847.60x = 605,115.30 × 336,925.40
  4. Step 4: Simplify right side
    403,847.60x = 203,878,714,498.62
  5. Step 5: Solve for x
    x = 203,878,714,498.62/403,847.60
  6. Step 6: Final answer
    x = 504,840.72

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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.