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Finding the Fourth Proportional to 171,369.80, 236,433.09 and 99,734.63

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Solution

The fourth proportional to 171,369.80, 236,433.09 and 99,734.63 is: 137,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,369.80 : 236,433.09 = 99,734.63 : x
  2. Step 2: Convert to fraction form
    171,369.80/236,433.09 = 99,734.63/x
  3. Step 3: Cross multiply
    171,369.80x = 236,433.09 × 99,734.63
  4. Step 4: Simplify right side
    171,369.80x = 23,580,566,750.91
  5. Step 5: Solve for x
    x = 23,580,566,750.91/171,369.80
  6. Step 6: Final answer
    x = 137,600.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.