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Finding the Fourth Proportional to 117,462.09, 176,069.51 and 74,799.95

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Solution

The fourth proportional to 117,462.09, 176,069.51 and 74,799.95 is: 112,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,462.09 : 176,069.51 = 74,799.95 : x
  2. Step 2: Convert to fraction form
    117,462.09/176,069.51 = 74,799.95/x
  3. Step 3: Cross multiply
    117,462.09x = 176,069.51 × 74,799.95
  4. Step 4: Simplify right side
    117,462.09x = 13,169,990,544.52
  5. Step 5: Solve for x
    x = 13,169,990,544.52/117,462.09
  6. Step 6: Final answer
    x = 112,121.20

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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.