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Finding the Fourth Proportional to 171,835.01, 257,407.59 and 87,591.77

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Solution

The fourth proportional to 171,835.01, 257,407.59 and 87,591.77 is: 131,211.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,835.01 : 257,407.59 = 87,591.77 : x
  2. Step 2: Convert to fraction form
    171,835.01/257,407.59 = 87,591.77/x
  3. Step 3: Cross multiply
    171,835.01x = 257,407.59 × 87,591.77
  4. Step 4: Simplify right side
    171,835.01x = 22,546,785,132.50
  5. Step 5: Solve for x
    x = 22,546,785,132.50/171,835.01
  6. Step 6: Final answer
    x = 131,211.83

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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.