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Finding the Fourth Proportional to 104,604, 144,151.92 and 66,812.64

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Solution

The fourth proportional to 104,604, 144,151.92 and 66,812.64 is: 92,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,604 : 144,151.92 = 66,812.64 : x
  2. Step 2: Convert to fraction form
    104,604/144,151.92 = 66,812.64/x
  3. Step 3: Cross multiply
    104,604x = 144,151.92 × 66,812.64
  4. Step 4: Simplify right side
    104,604x = 9,631,170,336.27
  5. Step 5: Solve for x
    x = 9,631,170,336.27/104,604
  6. Step 6: Final answer
    x = 92,072.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.