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Finding the Fourth Proportional to 386,645.63, 579,192.39 and 197,098.34

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Solution

The fourth proportional to 386,645.63, 579,192.39 and 197,098.34 is: 295,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,645.63 : 579,192.39 = 197,098.34 : x
  2. Step 2: Convert to fraction form
    386,645.63/579,192.39 = 197,098.34/x
  3. Step 3: Cross multiply
    386,645.63x = 579,192.39 × 197,098.34
  4. Step 4: Simplify right side
    386,645.63x = 114,157,855,713.67
  5. Step 5: Solve for x
    x = 114,157,855,713.67/386,645.63
  6. Step 6: Final answer
    x = 295,251.90

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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.