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Finding the Fourth Proportional to 263,830.68, 395,801.46 and 86,323.86

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Solution

The fourth proportional to 263,830.68, 395,801.46 and 86,323.86 is: 129,503.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,830.68 : 395,801.46 = 86,323.86 : x
  2. Step 2: Convert to fraction form
    263,830.68/395,801.46 = 86,323.86/x
  3. Step 3: Cross multiply
    263,830.68x = 395,801.46 × 86,323.86
  4. Step 4: Simplify right side
    263,830.68x = 34,167,109,820.84
  5. Step 5: Solve for x
    x = 34,167,109,820.84/263,830.68
  6. Step 6: Final answer
    x = 129,503.93

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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.