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Finding the Fourth Proportional to 386,967.96, 580,186.95 and 197,060.72

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Solution

The fourth proportional to 386,967.96, 580,186.95 and 197,060.72 is: 295,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,967.96 : 580,186.95 = 197,060.72 : x
  2. Step 2: Convert to fraction form
    386,967.96/580,186.95 = 197,060.72/x
  3. Step 3: Cross multiply
    386,967.96x = 580,186.95 × 197,060.72
  4. Step 4: Simplify right side
    386,967.96x = 114,332,056,651.14
  5. Step 5: Solve for x
    x = 114,332,056,651.14/386,967.96
  6. Step 6: Final answer
    x = 295,456.13

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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.