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Finding the Fourth Proportional to 263,326.16, 395,030.20 and 85,791.84

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Solution

The fourth proportional to 263,326.16, 395,030.20 and 85,791.84 is: 128,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,326.16 : 395,030.20 = 85,791.84 : x
  2. Step 2: Convert to fraction form
    263,326.16/395,030.20 = 85,791.84/x
  3. Step 3: Cross multiply
    263,326.16x = 395,030.20 × 85,791.84
  4. Step 4: Simplify right side
    263,326.16x = 33,890,367,713.57
  5. Step 5: Solve for x
    x = 33,890,367,713.57/263,326.16
  6. Step 6: Final answer
    x = 128,701.10

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1.5x scale

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.