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Finding the Fourth Proportional to 104,638.90, 156,958.35 and 73,146.10

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Solution

The fourth proportional to 104,638.90, 156,958.35 and 73,146.10 is: 109,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,638.90 : 156,958.35 = 73,146.10 : x
  2. Step 2: Convert to fraction form
    104,638.90/156,958.35 = 73,146.10/x
  3. Step 3: Cross multiply
    104,638.90x = 156,958.35 × 73,146.10
  4. Step 4: Simplify right side
    104,638.90x = 11,480,891,164.94
  5. Step 5: Solve for x
    x = 11,480,891,164.94/104,638.90
  6. Step 6: Final answer
    x = 109,719.15

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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.