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Finding the Fourth Proportional to 171,910.80, 257,866.20 and 153,831.60

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Solution

The fourth proportional to 171,910.80, 257,866.20 and 153,831.60 is: 230,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,910.80 : 257,866.20 = 153,831.60 : x
  2. Step 2: Convert to fraction form
    171,910.80/257,866.20 = 153,831.60/x
  3. Step 3: Cross multiply
    171,910.80x = 257,866.20 × 153,831.60
  4. Step 4: Simplify right side
    171,910.80x = 39,667,970,131.92
  5. Step 5: Solve for x
    x = 39,667,970,131.92/171,910.80
  6. Step 6: Final answer
    x = 230,747.40

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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.