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Finding the Fourth Proportional to 104,641.40, 156,962.10 and 73,148.60

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Solution

The fourth proportional to 104,641.40, 156,962.10 and 73,148.60 is: 109,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,641.40 : 156,962.10 = 73,148.60 : x
  2. Step 2: Convert to fraction form
    104,641.40/156,962.10 = 73,148.60/x
  3. Step 3: Cross multiply
    104,641.40x = 156,962.10 × 73,148.60
  4. Step 4: Simplify right side
    104,641.40x = 11,481,557,868.06
  5. Step 5: Solve for x
    x = 11,481,557,868.06/104,641.40
  6. Step 6: Final answer
    x = 109,722.90

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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.