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Finding the Fourth Proportional to 104,641.70, 156,962.55 and 73,148.90

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Solution

The fourth proportional to 104,641.70, 156,962.55 and 73,148.90 is: 109,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,641.70 : 156,962.55 = 73,148.90 : x
  2. Step 2: Convert to fraction form
    104,641.70/156,962.55 = 73,148.90/x
  3. Step 3: Cross multiply
    104,641.70x = 156,962.55 × 73,148.90
  4. Step 4: Simplify right side
    104,641.70x = 11,481,637,873.70
  5. Step 5: Solve for x
    x = 11,481,637,873.70/104,641.70
  6. Step 6: Final answer
    x = 109,723.35

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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.