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Finding the Fourth Proportional to 369,057.20, 553,585.80 and 322,401.20

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Solution

The fourth proportional to 369,057.20, 553,585.80 and 322,401.20 is: 483,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,057.20 : 553,585.80 = 322,401.20 : x
  2. Step 2: Convert to fraction form
    369,057.20/553,585.80 = 322,401.20/x
  3. Step 3: Cross multiply
    369,057.20x = 553,585.80 × 322,401.20
  4. Step 4: Simplify right side
    369,057.20x = 178,476,726,222.96
  5. Step 5: Solve for x
    x = 178,476,726,222.96/369,057.20
  6. Step 6: Final answer
    x = 483,601.80

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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.