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Finding the Fourth Proportional to 209,328.50, 313,992.72 and 61,584.50

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Solution

The fourth proportional to 209,328.50, 313,992.72 and 61,584.50 is: 92,376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,328.50 : 313,992.72 = 61,584.50 : x
  2. Step 2: Convert to fraction form
    209,328.50/313,992.72 = 61,584.50/x
  3. Step 3: Cross multiply
    209,328.50x = 313,992.72 × 61,584.50
  4. Step 4: Simplify right side
    209,328.50x = 19,337,085,449.82
  5. Step 5: Solve for x
    x = 19,337,085,449.82/209,328.50
  6. Step 6: Final answer
    x = 92,376.74

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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.