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Finding the Fourth Proportional to 171,353.39, 257,091.57 and 76,575.63

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Solution

The fourth proportional to 171,353.39, 257,091.57 and 76,575.63 is: 114,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,353.39 : 257,091.57 = 76,575.63 : x
  2. Step 2: Convert to fraction form
    171,353.39/257,091.57 = 76,575.63/x
  3. Step 3: Cross multiply
    171,353.39x = 257,091.57 × 76,575.63
  4. Step 4: Simplify right side
    171,353.39x = 19,686,948,940.44
  5. Step 5: Solve for x
    x = 19,686,948,940.44/171,353.39
  6. Step 6: Final answer
    x = 114,890.93

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1.5x scale

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.