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Finding the Fourth Proportional to 622,640.60, 933,960.90 and 410,064.20

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Solution

The fourth proportional to 622,640.60, 933,960.90 and 410,064.20 is: 615,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,640.60 : 933,960.90 = 410,064.20 : x
  2. Step 2: Convert to fraction form
    622,640.60/933,960.90 = 410,064.20/x
  3. Step 3: Cross multiply
    622,640.60x = 933,960.90 × 410,064.20
  4. Step 4: Simplify right side
    622,640.60x = 382,983,929,289.78
  5. Step 5: Solve for x
    x = 382,983,929,289.78/622,640.60
  6. Step 6: Final answer
    x = 615,096.30

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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.