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Finding the Fourth Proportional to 263,666.67, 395,520.59 and 86,191.62

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Solution

The fourth proportional to 263,666.67, 395,520.59 and 86,191.62 is: 129,294.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,666.67 : 395,520.59 = 86,191.62 : x
  2. Step 2: Convert to fraction form
    263,666.67/395,520.59 = 86,191.62/x
  3. Step 3: Cross multiply
    263,666.67x = 395,520.59 × 86,191.62
  4. Step 4: Simplify right side
    263,666.67x = 34,090,560,395.46
  5. Step 5: Solve for x
    x = 34,090,560,395.46/263,666.67
  6. Step 6: Final answer
    x = 129,294.16

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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.