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Finding the Fourth Proportional to 121,987.44, 182,908.86 and 37,722.66

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Solution

The fourth proportional to 121,987.44, 182,908.86 and 37,722.66 is: 56,561.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,987.44 : 182,908.86 = 37,722.66 : x
  2. Step 2: Convert to fraction form
    121,987.44/182,908.86 = 37,722.66/x
  3. Step 3: Cross multiply
    121,987.44x = 182,908.86 × 37,722.66
  4. Step 4: Simplify right side
    121,987.44x = 6,899,808,736.77
  5. Step 5: Solve for x
    x = 6,899,808,736.77/121,987.44
  6. Step 6: Final answer
    x = 56,561.63

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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.