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Finding the Fourth Proportional to 171,585.06, 257,093.07 and 121,416.48

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Solution

The fourth proportional to 171,585.06, 257,093.07 and 121,416.48 is: 181,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,585.06 : 257,093.07 = 121,416.48 : x
  2. Step 2: Convert to fraction form
    171,585.06/257,093.07 = 121,416.48/x
  3. Step 3: Cross multiply
    171,585.06x = 257,093.07 × 121,416.48
  4. Step 4: Simplify right side
    171,585.06x = 31,215,335,591.79
  5. Step 5: Solve for x
    x = 31,215,335,591.79/171,585.06
  6. Step 6: Final answer
    x = 181,923.39

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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.