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Finding the Fourth Proportional to 171,025.86, 256,543.20 and 81,047.46

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Solution

The fourth proportional to 171,025.86, 256,543.20 and 81,047.46 is: 121,573.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,025.86 : 256,543.20 = 81,047.46 : x
  2. Step 2: Convert to fraction form
    171,025.86/256,543.20 = 81,047.46/x
  3. Step 3: Cross multiply
    171,025.86x = 256,543.20 × 81,047.46
  4. Step 4: Simplify right side
    171,025.86x = 20,792,174,740.27
  5. Step 5: Solve for x
    x = 20,792,174,740.27/171,025.86
  6. Step 6: Final answer
    x = 121,573.28

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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.