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Finding the Fourth Proportional to 104,661.34, 156,990.48 and 25,776.34

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Solution

The fourth proportional to 104,661.34, 156,990.48 and 25,776.34 is: 38,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,661.34 : 156,990.48 = 25,776.34 : x
  2. Step 2: Convert to fraction form
    104,661.34/156,990.48 = 25,776.34/x
  3. Step 3: Cross multiply
    104,661.34x = 156,990.48 × 25,776.34
  4. Step 4: Simplify right side
    104,661.34x = 4,046,639,989.24
  5. Step 5: Solve for x
    x = 4,046,639,989.24/104,661.34
  6. Step 6: Final answer
    x = 38,664.13

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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.