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Finding the Fourth Proportional to 609,137.86, 913,667.88 and 188,378.50

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Solution

The fourth proportional to 609,137.86, 913,667.88 and 188,378.50 is: 282,555.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,137.86 : 913,667.88 = 188,378.50 : x
  2. Step 2: Convert to fraction form
    609,137.86/913,667.88 = 188,378.50/x
  3. Step 3: Cross multiply
    609,137.86x = 913,667.88 × 188,378.50
  4. Step 4: Simplify right side
    609,137.86x = 172,115,384,732.58
  5. Step 5: Solve for x
    x = 172,115,384,732.58/609,137.86
  6. Step 6: Final answer
    x = 282,555.72

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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.