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Finding the Fourth Proportional to 171,638.09, 257,393.93 and 59,289.47

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Solution

The fourth proportional to 171,638.09, 257,393.93 and 59,289.47 is: 88,912.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,638.09 : 257,393.93 = 59,289.47 : x
  2. Step 2: Convert to fraction form
    171,638.09/257,393.93 = 59,289.47/x
  3. Step 3: Cross multiply
    171,638.09x = 257,393.93 × 59,289.47
  4. Step 4: Simplify right side
    171,638.09x = 15,260,748,107.50
  5. Step 5: Solve for x
    x = 15,260,748,107.50/171,638.09
  6. Step 6: Final answer
    x = 88,912.37

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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.