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Finding the Fourth Proportional to 620,930.40, 931,395.60 and 222,021.60

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Solution

The fourth proportional to 620,930.40, 931,395.60 and 222,021.60 is: 333,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,930.40 : 931,395.60 = 222,021.60 : x
  2. Step 2: Convert to fraction form
    620,930.40/931,395.60 = 222,021.60/x
  3. Step 3: Cross multiply
    620,930.40x = 931,395.60 × 222,021.60
  4. Step 4: Simplify right side
    620,930.40x = 206,789,941,344.96
  5. Step 5: Solve for x
    x = 206,789,941,344.96/620,930.40
  6. Step 6: Final answer
    x = 333,032.40

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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.