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Finding the Fourth Proportional to 104,653.22, 156,978.55 and 25,768.13

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Solution

The fourth proportional to 104,653.22, 156,978.55 and 25,768.13 is: 38,651.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,653.22 : 156,978.55 = 25,768.13 : x
  2. Step 2: Convert to fraction form
    104,653.22/156,978.55 = 25,768.13/x
  3. Step 3: Cross multiply
    104,653.22x = 156,978.55 × 25,768.13
  4. Step 4: Simplify right side
    104,653.22x = 4,045,043,683.61
  5. Step 5: Solve for x
    x = 4,045,043,683.61/104,653.22
  6. Step 6: Final answer
    x = 38,651.88

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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.