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Finding the Fourth Proportional to 104,618.64, 156,640.32 and 73,060.20

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Solution

The fourth proportional to 104,618.64, 156,640.32 and 73,060.20 is: 109,389.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,618.64 : 156,640.32 = 73,060.20 : x
  2. Step 2: Convert to fraction form
    104,618.64/156,640.32 = 73,060.20/x
  3. Step 3: Cross multiply
    104,618.64x = 156,640.32 × 73,060.20
  4. Step 4: Simplify right side
    104,618.64x = 11,444,173,107.26
  5. Step 5: Solve for x
    x = 11,444,173,107.26/104,618.64
  6. Step 6: Final answer
    x = 109,389.43

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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.