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Finding the Fourth Proportional to 117,585.59, 162,205.91 and 74,489.04

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Solution

The fourth proportional to 117,585.59, 162,205.91 and 74,489.04 is: 102,755.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,585.59 : 162,205.91 = 74,489.04 : x
  2. Step 2: Convert to fraction form
    117,585.59/162,205.91 = 74,489.04/x
  3. Step 3: Cross multiply
    117,585.59x = 162,205.91 × 74,489.04
  4. Step 4: Simplify right side
    117,585.59x = 12,082,562,145.78
  5. Step 5: Solve for x
    x = 12,082,562,145.78/117,585.59
  6. Step 6: Final answer
    x = 102,755.47

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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.