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Finding the Fourth Proportional to 139,696.04, 192,781.01 and 76,033.69

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Solution

The fourth proportional to 139,696.04, 192,781.01 and 76,033.69 is: 104,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,696.04 : 192,781.01 = 76,033.69 : x
  2. Step 2: Convert to fraction form
    139,696.04/192,781.01 = 76,033.69/x
  3. Step 3: Cross multiply
    139,696.04x = 192,781.01 × 76,033.69
  4. Step 4: Simplify right side
    139,696.04x = 14,657,851,260.36
  5. Step 5: Solve for x
    x = 14,657,851,260.36/139,696.04
  6. Step 6: Final answer
    x = 104,926.75

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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.