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Finding the Fourth Proportional to 104,615.52, 156,834.84 and 45,406.68

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Solution

The fourth proportional to 104,615.52, 156,834.84 and 45,406.68 is: 68,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,615.52 : 156,834.84 = 45,406.68 : x
  2. Step 2: Convert to fraction form
    104,615.52/156,834.84 = 45,406.68/x
  3. Step 3: Cross multiply
    104,615.52x = 156,834.84 × 45,406.68
  4. Step 4: Simplify right side
    104,615.52x = 7,121,349,392.73
  5. Step 5: Solve for x
    x = 7,121,349,392.73/104,615.52
  6. Step 6: Final answer
    x = 68,071.63

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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.