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Finding the Fourth Proportional to 620,993.52, 931,490.16 and 265,777.20

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Solution

The fourth proportional to 620,993.52, 931,490.16 and 265,777.20 is: 398,665.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,993.52 : 931,490.16 = 265,777.20 : x
  2. Step 2: Convert to fraction form
    620,993.52/931,490.16 = 265,777.20/x
  3. Step 3: Cross multiply
    620,993.52x = 931,490.16 × 265,777.20
  4. Step 4: Simplify right side
    620,993.52x = 247,568,846,552.35
  5. Step 5: Solve for x
    x = 247,568,846,552.35/620,993.52
  6. Step 6: Final answer
    x = 398,665.75

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Similar ratio
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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.