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Finding the Fourth Proportional to 79,391.90, 118,932.15 and 46,041.90

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Solution

The fourth proportional to 79,391.90, 118,932.15 and 46,041.90 is: 68,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,391.90 : 118,932.15 = 46,041.90 : x
  2. Step 2: Convert to fraction form
    79,391.90/118,932.15 = 46,041.90/x
  3. Step 3: Cross multiply
    79,391.90x = 118,932.15 × 46,041.90
  4. Step 4: Simplify right side
    79,391.90x = 5,475,862,157.09
  5. Step 5: Solve for x
    x = 5,475,862,157.09/79,391.90
  6. Step 6: Final answer
    x = 68,972.56

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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.