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Finding the Fourth Proportional to 638,885.56, 881,627.43 and 366,953.53

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Solution

The fourth proportional to 638,885.56, 881,627.43 and 366,953.53 is: 506,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,885.56 : 881,627.43 = 366,953.53 : x
  2. Step 2: Convert to fraction form
    638,885.56/881,627.43 = 366,953.53/x
  3. Step 3: Cross multiply
    638,885.56x = 881,627.43 × 366,953.53
  4. Step 4: Simplify right side
    638,885.56x = 323,516,296,344.27
  5. Step 5: Solve for x
    x = 323,516,296,344.27/638,885.56
  6. Step 6: Final answer
    x = 506,375.97

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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.