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Finding the Fourth Proportional to 117,961.03, 162,894.41 and 74,954.69

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Solution

The fourth proportional to 117,961.03, 162,894.41 and 74,954.69 is: 103,506.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,961.03 : 162,894.41 = 74,954.69 : x
  2. Step 2: Convert to fraction form
    117,961.03/162,894.41 = 74,954.69/x
  3. Step 3: Cross multiply
    117,961.03x = 162,894.41 × 74,954.69
  4. Step 4: Simplify right side
    117,961.03x = 12,209,700,004.28
  5. Step 5: Solve for x
    x = 12,209,700,004.28/117,961.03
  6. Step 6: Final answer
    x = 103,506.22

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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.