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Finding the Fourth Proportional to 368,465.80, 552,698.70 and 324,920.20

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Solution

The fourth proportional to 368,465.80, 552,698.70 and 324,920.20 is: 487,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,465.80 : 552,698.70 = 324,920.20 : x
  2. Step 2: Convert to fraction form
    368,465.80/552,698.70 = 324,920.20/x
  3. Step 3: Cross multiply
    368,465.80x = 552,698.70 × 324,920.20
  4. Step 4: Simplify right side
    368,465.80x = 179,582,972,143.74
  5. Step 5: Solve for x
    x = 179,582,972,143.74/368,465.80
  6. Step 6: Final answer
    x = 487,380.30

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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.