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Finding the Fourth Proportional to 171,984.15, 257,858.46 and 87,580.93

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Solution

The fourth proportional to 171,984.15, 257,858.46 and 87,580.93 is: 131,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,984.15 : 257,858.46 = 87,580.93 : x
  2. Step 2: Convert to fraction form
    171,984.15/257,858.46 = 87,580.93/x
  3. Step 3: Cross multiply
    171,984.15x = 257,858.46 × 87,580.93
  4. Step 4: Simplify right side
    171,984.15x = 22,583,483,735.17
  5. Step 5: Solve for x
    x = 22,583,483,735.17/171,984.15
  6. Step 6: Final answer
    x = 131,311.42

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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.