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Finding the Fourth Proportional to 117,696.65, 162,422.44 and 63,981.77

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Solution

The fourth proportional to 117,696.65, 162,422.44 and 63,981.77 is: 88,295.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,696.65 : 162,422.44 = 63,981.77 : x
  2. Step 2: Convert to fraction form
    117,696.65/162,422.44 = 63,981.77/x
  3. Step 3: Cross multiply
    117,696.65x = 162,422.44 × 63,981.77
  4. Step 4: Simplify right side
    117,696.65x = 10,392,075,445.02
  5. Step 5: Solve for x
    x = 10,392,075,445.02/117,696.65
  6. Step 6: Final answer
    x = 88,295.42

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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.