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Finding the Fourth Proportional to 104,628.90, 156,943.35 and 73,136.10

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Solution

The fourth proportional to 104,628.90, 156,943.35 and 73,136.10 is: 109,704.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,628.90 : 156,943.35 = 73,136.10 : x
  2. Step 2: Convert to fraction form
    104,628.90/156,943.35 = 73,136.10/x
  3. Step 3: Cross multiply
    104,628.90x = 156,943.35 × 73,136.10
  4. Step 4: Simplify right side
    104,628.90x = 11,478,224,539.94
  5. Step 5: Solve for x
    x = 11,478,224,539.94/104,628.90
  6. Step 6: Final answer
    x = 109,704.15

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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.