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Finding the Fourth Proportional to 621,987.06, 858,286.35 and 350,076.54

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Solution

The fourth proportional to 621,987.06, 858,286.35 and 350,076.54 is: 483,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,987.06 : 858,286.35 = 350,076.54 : x
  2. Step 2: Convert to fraction form
    621,987.06/858,286.35 = 350,076.54/x
  3. Step 3: Cross multiply
    621,987.06x = 858,286.35 × 350,076.54
  4. Step 4: Simplify right side
    621,987.06x = 300,465,915,737.23
  5. Step 5: Solve for x
    x = 300,465,915,737.23/621,987.06
  6. Step 6: Final answer
    x = 483,074.22

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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.