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Finding the Fourth Proportional to 171,911.41, 257,866.76 and 96,997.57

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Solution

The fourth proportional to 171,911.41, 257,866.76 and 96,997.57 is: 145,496.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,911.41 : 257,866.76 = 96,997.57 : x
  2. Step 2: Convert to fraction form
    171,911.41/257,866.76 = 96,997.57/x
  3. Step 3: Cross multiply
    171,911.41x = 257,866.76 × 96,997.57
  4. Step 4: Simplify right side
    171,911.41x = 25,012,448,618.79
  5. Step 5: Solve for x
    x = 25,012,448,618.79/171,911.41
  6. Step 6: Final answer
    x = 145,496.15

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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.