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Finding the Fourth Proportional to 412,696.74, 619,183.58 and 159,985.47

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Solution

The fourth proportional to 412,696.74, 619,183.58 and 159,985.47 is: 240,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,696.74 : 619,183.58 = 159,985.47 : x
  2. Step 2: Convert to fraction form
    412,696.74/619,183.58 = 159,985.47/x
  3. Step 3: Cross multiply
    412,696.74x = 619,183.58 × 159,985.47
  4. Step 4: Simplify right side
    412,696.74x = 99,060,376,062.58
  5. Step 5: Solve for x
    x = 99,060,376,062.58/412,696.74
  6. Step 6: Final answer
    x = 240,031.88

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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.