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Finding the Fourth Proportional to 131,730.79, 197,596.32 and 61,659.31

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Solution

The fourth proportional to 131,730.79, 197,596.32 and 61,659.31 is: 92,489.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,730.79 : 197,596.32 = 61,659.31 : x
  2. Step 2: Convert to fraction form
    131,730.79/197,596.32 = 61,659.31/x
  3. Step 3: Cross multiply
    131,730.79x = 197,596.32 × 61,659.31
  4. Step 4: Simplify right side
    131,730.79x = 12,183,652,749.74
  5. Step 5: Solve for x
    x = 12,183,652,749.74/131,730.79
  6. Step 6: Final answer
    x = 92,489.03

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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.