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Finding the Fourth Proportional to 443,220.40, 622,083.20 and 443,220.40

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Solution

The fourth proportional to 443,220.40, 622,083.20 and 443,220.40 is: 622,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,220.40 : 622,083.20 = 443,220.40 : x
  2. Step 2: Convert to fraction form
    443,220.40/622,083.20 = 443,220.40/x
  3. Step 3: Cross multiply
    443,220.40x = 622,083.20 × 443,220.40
  4. Step 4: Simplify right side
    443,220.40x = 275,719,964,737.28
  5. Step 5: Solve for x
    x = 275,719,964,737.28/443,220.40
  6. Step 6: Final answer
    x = 622,083.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.