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Finding the Fourth Proportional to 621,906.48, 858,274.52 and 350,000.55

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Solution

The fourth proportional to 621,906.48, 858,274.52 and 350,000.55 is: 483,025.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,906.48 : 858,274.52 = 350,000.55 : x
  2. Step 2: Convert to fraction form
    621,906.48/858,274.52 = 350,000.55/x
  3. Step 3: Cross multiply
    621,906.48x = 858,274.52 × 350,000.55
  4. Step 4: Simplify right side
    621,906.48x = 300,396,552,300.98
  5. Step 5: Solve for x
    x = 300,396,552,300.98/621,906.48
  6. Step 6: Final answer
    x = 483,025.28

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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.