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Finding the Fourth Proportional to 167,680.79, 251,521.72 and 105,220.07

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Solution

The fourth proportional to 167,680.79, 251,521.72 and 105,220.07 is: 157,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,680.79 : 251,521.72 = 105,220.07 : x
  2. Step 2: Convert to fraction form
    167,680.79/251,521.72 = 105,220.07/x
  3. Step 3: Cross multiply
    167,680.79x = 251,521.72 × 105,220.07
  4. Step 4: Simplify right side
    167,680.79x = 26,465,131,201.21
  5. Step 5: Solve for x
    x = 26,465,131,201.21/167,680.79
  6. Step 6: Final answer
    x = 157,830.43

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1.5x scale

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.