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Finding the Fourth Proportional to 117,790.60, 176,618.76 and 80,395.94

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Solution

The fourth proportional to 117,790.60, 176,618.76 and 80,395.94 is: 120,548.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,790.60 : 176,618.76 = 80,395.94 : x
  2. Step 2: Convert to fraction form
    117,790.60/176,618.76 = 80,395.94/x
  3. Step 3: Cross multiply
    117,790.60x = 176,618.76 × 80,395.94
  4. Step 4: Simplify right side
    117,790.60x = 14,199,431,231.83
  5. Step 5: Solve for x
    x = 14,199,431,231.83/117,790.60
  6. Step 6: Final answer
    x = 120,548.08

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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.