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Finding the Fourth Proportional to 622,355.20, 933,403.20 and 267,380.80

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Solution

The fourth proportional to 622,355.20, 933,403.20 and 267,380.80 is: 401,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,355.20 : 933,403.20 = 267,380.80 : x
  2. Step 2: Convert to fraction form
    622,355.20/933,403.20 = 267,380.80/x
  3. Step 3: Cross multiply
    622,355.20x = 933,403.20 × 267,380.80
  4. Step 4: Simplify right side
    622,355.20x = 249,574,094,338.56
  5. Step 5: Solve for x
    x = 249,574,094,338.56/622,355.20
  6. Step 6: Final answer
    x = 401,015.52

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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.