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Finding the Fourth Proportional to 208,604.61, 312,919.43 and 58,857.71

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Solution

The fourth proportional to 208,604.61, 312,919.43 and 58,857.71 is: 88,290.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,604.61 : 312,919.43 = 58,857.71 : x
  2. Step 2: Convert to fraction form
    208,604.61/312,919.43 = 58,857.71/x
  3. Step 3: Cross multiply
    208,604.61x = 312,919.43 × 58,857.71
  4. Step 4: Simplify right side
    208,604.61x = 18,417,719,205.42
  5. Step 5: Solve for x
    x = 18,417,719,205.42/208,604.61
  6. Step 6: Final answer
    x = 88,290.09

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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.