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Finding the Fourth Proportional to 622,661.60, 933,982.80 and 422,484.32

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Solution

The fourth proportional to 622,661.60, 933,982.80 and 422,484.32 is: 633,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,661.60 : 933,982.80 = 422,484.32 : x
  2. Step 2: Convert to fraction form
    622,661.60/933,982.80 = 422,484.32/x
  3. Step 3: Cross multiply
    622,661.60x = 933,982.80 × 422,484.32
  4. Step 4: Simplify right side
    622,661.60x = 394,593,088,149.70
  5. Step 5: Solve for x
    x = 394,593,088,149.70/622,661.60
  6. Step 6: Final answer
    x = 633,719.97

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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.