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Finding the Fourth Proportional to 121,786.86, 182,794.20 and 61,858.20

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Solution

The fourth proportional to 121,786.86, 182,794.20 and 61,858.20 is: 92,845.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,786.86 : 182,794.20 = 61,858.20 : x
  2. Step 2: Convert to fraction form
    121,786.86/182,794.20 = 61,858.20/x
  3. Step 3: Cross multiply
    121,786.86x = 182,794.20 × 61,858.20
  4. Step 4: Simplify right side
    121,786.86x = 11,307,320,182.44
  5. Step 5: Solve for x
    x = 11,307,320,182.44/121,786.86
  6. Step 6: Final answer
    x = 92,845.16

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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.