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Finding the Fourth Proportional to 398,339.20, 597,614.40 and 173,603.20

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Solution

The fourth proportional to 398,339.20, 597,614.40 and 173,603.20 is: 260,450.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,339.20 : 597,614.40 = 173,603.20 : x
  2. Step 2: Convert to fraction form
    398,339.20/597,614.40 = 173,603.20/x
  3. Step 3: Cross multiply
    398,339.20x = 597,614.40 × 173,603.20
  4. Step 4: Simplify right side
    398,339.20x = 103,747,772,206.08
  5. Step 5: Solve for x
    x = 103,747,772,206.08/398,339.20
  6. Step 6: Final answer
    x = 260,450.82

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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.