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Finding the Fourth Proportional to 57,858.90, 79,876.77 and 37,728.06

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Solution

The fourth proportional to 57,858.90, 79,876.77 and 37,728.06 is: 52,085.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,858.90 : 79,876.77 = 37,728.06 : x
  2. Step 2: Convert to fraction form
    57,858.90/79,876.77 = 37,728.06/x
  3. Step 3: Cross multiply
    57,858.90x = 79,876.77 × 37,728.06
  4. Step 4: Simplify right side
    57,858.90x = 3,013,595,571.17
  5. Step 5: Solve for x
    x = 3,013,595,571.17/57,858.90
  6. Step 6: Final answer
    x = 52,085.26

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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.