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Finding the Fourth Proportional to 122,968.98, 184,479.39 and 39,856.50

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Solution

The fourth proportional to 122,968.98, 184,479.39 and 39,856.50 is: 59,793.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,968.98 : 184,479.39 = 39,856.50 : x
  2. Step 2: Convert to fraction form
    122,968.98/184,479.39 = 39,856.50/x
  3. Step 3: Cross multiply
    122,968.98x = 184,479.39 × 39,856.50
  4. Step 4: Simplify right side
    122,968.98x = 7,352,702,807.54
  5. Step 5: Solve for x
    x = 7,352,702,807.54/122,968.98
  6. Step 6: Final answer
    x = 59,793.15

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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.