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Finding the Fourth Proportional to 263,656.81, 395,422.48 and 113,815.11

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Solution

The fourth proportional to 263,656.81, 395,422.48 and 113,815.11 is: 170,695.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,656.81 : 395,422.48 = 113,815.11 : x
  2. Step 2: Convert to fraction form
    263,656.81/395,422.48 = 113,815.11/x
  3. Step 3: Cross multiply
    263,656.81x = 395,422.48 × 113,815.11
  4. Step 4: Simplify right side
    263,656.81x = 45,005,051,080.56
  5. Step 5: Solve for x
    x = 45,005,051,080.56/263,656.81
  6. Step 6: Final answer
    x = 170,695.58

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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.