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Finding the Fourth Proportional to 104,389.12, 156,583.68 and 73,362.88

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Solution

The fourth proportional to 104,389.12, 156,583.68 and 73,362.88 is: 110,044.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,389.12 : 156,583.68 = 73,362.88 : x
  2. Step 2: Convert to fraction form
    104,389.12/156,583.68 = 73,362.88/x
  3. Step 3: Cross multiply
    104,389.12x = 156,583.68 × 73,362.88
  4. Step 4: Simplify right side
    104,389.12x = 11,487,429,725.80
  5. Step 5: Solve for x
    x = 11,487,429,725.80/104,389.12
  6. Step 6: Final answer
    x = 110,044.32

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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.