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Finding the Fourth Proportional to 467,987.52, 645,662.52 and 381,796.32

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Solution

The fourth proportional to 467,987.52, 645,662.52 and 381,796.32 is: 526,748.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,987.52 : 645,662.52 = 381,796.32 : x
  2. Step 2: Convert to fraction form
    467,987.52/645,662.52 = 381,796.32/x
  3. Step 3: Cross multiply
    467,987.52x = 645,662.52 × 381,796.32
  4. Step 4: Simplify right side
    467,987.52x = 246,511,574,097.93
  5. Step 5: Solve for x
    x = 246,511,574,097.93/467,987.52
  6. Step 6: Final answer
    x = 526,748.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.