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Finding the Fourth Proportional to 79,278, 118,833.21 and 29,326.02

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Solution

The fourth proportional to 79,278, 118,833.21 and 29,326.02 is: 43,958.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278 : 118,833.21 = 29,326.02 : x
  2. Step 2: Convert to fraction form
    79,278/118,833.21 = 29,326.02/x
  3. Step 3: Cross multiply
    79,278x = 118,833.21 × 29,326.02
  4. Step 4: Simplify right side
    79,278x = 3,484,905,093.12
  5. Step 5: Solve for x
    x = 3,484,905,093.12/79,278
  6. Step 6: Final answer
    x = 43,958.03

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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.