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Finding the Fourth Proportional to 622,917.60, 933,793.20 and 487,906.80

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Solution

The fourth proportional to 622,917.60, 933,793.20 and 487,906.80 is: 731,403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,917.60 : 933,793.20 = 487,906.80 : x
  2. Step 2: Convert to fraction form
    622,917.60/933,793.20 = 487,906.80/x
  3. Step 3: Cross multiply
    622,917.60x = 933,793.20 × 487,906.80
  4. Step 4: Simplify right side
    622,917.60x = 455,604,052,073.76
  5. Step 5: Solve for x
    x = 455,604,052,073.76/622,917.60
  6. Step 6: Final answer
    x = 731,403.40

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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.