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Finding the Fourth Proportional to 263,941.60, 395,908.80 and 86,454.40

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Solution

The fourth proportional to 263,941.60, 395,908.80 and 86,454.40 is: 129,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,941.60 : 395,908.80 = 86,454.40 : x
  2. Step 2: Convert to fraction form
    263,941.60/395,908.80 = 86,454.40/x
  3. Step 3: Cross multiply
    263,941.60x = 395,908.80 × 86,454.40
  4. Step 4: Simplify right side
    263,941.60x = 34,228,057,758.72
  5. Step 5: Solve for x
    x = 34,228,057,758.72/263,941.60
  6. Step 6: Final answer
    x = 129,680.42

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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.