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Finding the Fourth Proportional to 176,039.61, 264,103.67 and 81,336.81

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Solution

The fourth proportional to 176,039.61, 264,103.67 and 81,336.81 is: 122,025.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,039.61 : 264,103.67 = 81,336.81 : x
  2. Step 2: Convert to fraction form
    176,039.61/264,103.67 = 81,336.81/x
  3. Step 3: Cross multiply
    176,039.61x = 264,103.67 × 81,336.81
  4. Step 4: Simplify right side
    176,039.61x = 21,481,349,620.41
  5. Step 5: Solve for x
    x = 21,481,349,620.41/176,039.61
  6. Step 6: Final answer
    x = 122,025.66

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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.