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Finding the Fourth Proportional to 104,389.70, 156,583.80 and 25,503.20

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Solution

The fourth proportional to 104,389.70, 156,583.80 and 25,503.20 is: 38,254.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,389.70 : 156,583.80 = 25,503.20 : x
  2. Step 2: Convert to fraction form
    104,389.70/156,583.80 = 25,503.20/x
  3. Step 3: Cross multiply
    104,389.70x = 156,583.80 × 25,503.20
  4. Step 4: Simplify right side
    104,389.70x = 3,993,387,968.16
  5. Step 5: Solve for x
    x = 3,993,387,968.16/104,389.70
  6. Step 6: Final answer
    x = 38,254.62

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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.