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Finding the Fourth Proportional to 261,734.56, 361,101.71 and 171,143.55

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Solution

The fourth proportional to 261,734.56, 361,101.71 and 171,143.55 is: 236,117.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,734.56 : 361,101.71 = 171,143.55 : x
  2. Step 2: Convert to fraction form
    261,734.56/361,101.71 = 171,143.55/x
  3. Step 3: Cross multiply
    261,734.56x = 361,101.71 × 171,143.55
  4. Step 4: Simplify right side
    261,734.56x = 61,800,228,988.33
  5. Step 5: Solve for x
    x = 61,800,228,988.33/261,734.56
  6. Step 6: Final answer
    x = 236,117.96

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1.5x scale

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.