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Finding the Fourth Proportional to 369,718.20, 554,358.60 and 192,571.20

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Solution

The fourth proportional to 369,718.20, 554,358.60 and 192,571.20 is: 288,742.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,718.20 : 554,358.60 = 192,571.20 : x
  2. Step 2: Convert to fraction form
    369,718.20/554,358.60 = 192,571.20/x
  3. Step 3: Cross multiply
    369,718.20x = 554,358.60 × 192,571.20
  4. Step 4: Simplify right side
    369,718.20x = 106,753,500,832.32
  5. Step 5: Solve for x
    x = 106,753,500,832.32/369,718.20
  6. Step 6: Final answer
    x = 288,742.89

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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.