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Finding the Fourth Proportional to 666,086.38, 919,197.18 and 360,160.62

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Solution

The fourth proportional to 666,086.38, 919,197.18 and 360,160.62 is: 497,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,086.38 : 919,197.18 = 360,160.62 : x
  2. Step 2: Convert to fraction form
    666,086.38/919,197.18 = 360,160.62/x
  3. Step 3: Cross multiply
    666,086.38x = 919,197.18 × 360,160.62
  4. Step 4: Simplify right side
    666,086.38x = 331,058,626,251.05
  5. Step 5: Solve for x
    x = 331,058,626,251.05/666,086.38
  6. Step 6: Final answer
    x = 497,020.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.