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Finding the Fourth Proportional to 171,556.56, 257,050.29 and 121,387.98

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Solution

The fourth proportional to 171,556.56, 257,050.29 and 121,387.98 is: 181,880.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,556.56 : 257,050.29 = 121,387.98 : x
  2. Step 2: Convert to fraction form
    171,556.56/257,050.29 = 121,387.98/x
  3. Step 3: Cross multiply
    171,556.56x = 257,050.29 × 121,387.98
  4. Step 4: Simplify right side
    171,556.56x = 31,202,815,461.51
  5. Step 5: Solve for x
    x = 31,202,815,461.51/171,556.56
  6. Step 6: Final answer
    x = 181,880.63

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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.