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Finding the Fourth Proportional to 434,568.40, 652,144.20 and 197,789.20

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Solution

The fourth proportional to 434,568.40, 652,144.20 and 197,789.20 is: 296,816.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,568.40 : 652,144.20 = 197,789.20 : x
  2. Step 2: Convert to fraction form
    434,568.40/652,144.20 = 197,789.20/x
  3. Step 3: Cross multiply
    434,568.40x = 652,144.20 × 197,789.20
  4. Step 4: Simplify right side
    434,568.40x = 128,987,079,602.64
  5. Step 5: Solve for x
    x = 128,987,079,602.64/434,568.40
  6. Step 6: Final answer
    x = 296,816.52

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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.