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Finding the Fourth Proportional to 605,086.80, 907,630.20 and 161,854.80

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Solution

The fourth proportional to 605,086.80, 907,630.20 and 161,854.80 is: 242,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,086.80 : 907,630.20 = 161,854.80 : x
  2. Step 2: Convert to fraction form
    605,086.80/907,630.20 = 161,854.80/x
  3. Step 3: Cross multiply
    605,086.80x = 907,630.20 × 161,854.80
  4. Step 4: Simplify right side
    605,086.80x = 146,904,304,494.96
  5. Step 5: Solve for x
    x = 146,904,304,494.96/605,086.80
  6. Step 6: Final answer
    x = 242,782.20

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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.