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Finding the Fourth Proportional to 171,405.19, 257,205 and 92,517.67

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Solution

The fourth proportional to 171,405.19, 257,205 and 92,517.67 is: 138,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,405.19 : 257,205 = 92,517.67 : x
  2. Step 2: Convert to fraction form
    171,405.19/257,205 = 92,517.67/x
  3. Step 3: Cross multiply
    171,405.19x = 257,205 × 92,517.67
  4. Step 4: Simplify right side
    171,405.19x = 23,796,007,312.35
  5. Step 5: Solve for x
    x = 23,796,007,312.35/171,405.19
  6. Step 6: Final answer
    x = 138,828.98

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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.