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Finding the Fourth Proportional to 621,976.74, 858,292.38 and 350,055.96

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Solution

The fourth proportional to 621,976.74, 858,292.38 and 350,055.96 is: 483,057.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,976.74 : 858,292.38 = 350,055.96 : x
  2. Step 2: Convert to fraction form
    621,976.74/858,292.38 = 350,055.96/x
  3. Step 3: Cross multiply
    621,976.74x = 858,292.38 × 350,055.96
  4. Step 4: Simplify right side
    621,976.74x = 300,450,363,041.59
  5. Step 5: Solve for x
    x = 300,450,363,041.59/621,976.74
  6. Step 6: Final answer
    x = 483,057.23

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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.