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Finding the Fourth Proportional to 364,890.78, 503,599.80 and 203,756.28

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Solution

The fourth proportional to 364,890.78, 503,599.80 and 203,756.28 is: 281,211.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,890.78 : 503,599.80 = 203,756.28 : x
  2. Step 2: Convert to fraction form
    364,890.78/503,599.80 = 203,756.28/x
  3. Step 3: Cross multiply
    364,890.78x = 503,599.80 × 203,756.28
  4. Step 4: Simplify right side
    364,890.78x = 102,611,621,856.74
  5. Step 5: Solve for x
    x = 102,611,621,856.74/364,890.78
  6. Step 6: Final answer
    x = 281,211.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.