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Finding the Fourth Proportional to 368,435.20, 552,652.80 and 131,763.52

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Solution

The fourth proportional to 368,435.20, 552,652.80 and 131,763.52 is: 197,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,435.20 : 552,652.80 = 131,763.52 : x
  2. Step 2: Convert to fraction form
    368,435.20/552,652.80 = 131,763.52/x
  3. Step 3: Cross multiply
    368,435.20x = 552,652.80 × 131,763.52
  4. Step 4: Simplify right side
    368,435.20x = 72,819,478,265.86
  5. Step 5: Solve for x
    x = 72,819,478,265.86/368,435.20
  6. Step 6: Final answer
    x = 197,645.28

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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.