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Finding the Fourth Proportional to 181,778.89, 250,789.93 and 105,256.21

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Solution

The fourth proportional to 181,778.89, 250,789.93 and 105,256.21 is: 145,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,778.89 : 250,789.93 = 105,256.21 : x
  2. Step 2: Convert to fraction form
    181,778.89/250,789.93 = 105,256.21/x
  3. Step 3: Cross multiply
    181,778.89x = 250,789.93 × 105,256.21
  4. Step 4: Simplify right side
    181,778.89x = 26,397,197,537.97
  5. Step 5: Solve for x
    x = 26,397,197,537.97/181,778.89
  6. Step 6: Final answer
    x = 145,215.97

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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.