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Finding the Fourth Proportional to 270,634.80, 405,952.20 and 130,666.80

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Solution

The fourth proportional to 270,634.80, 405,952.20 and 130,666.80 is: 196,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,634.80 : 405,952.20 = 130,666.80 : x
  2. Step 2: Convert to fraction form
    270,634.80/405,952.20 = 130,666.80/x
  3. Step 3: Cross multiply
    270,634.80x = 405,952.20 × 130,666.80
  4. Step 4: Simplify right side
    270,634.80x = 53,044,474,926.96
  5. Step 5: Solve for x
    x = 53,044,474,926.96/270,634.80
  6. Step 6: Final answer
    x = 196,000.20

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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.