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Finding the Fourth Proportional to 80,672.78, 111,319.91 and 44,857.01

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Solution

The fourth proportional to 80,672.78, 111,319.91 and 44,857.01 is: 61,897.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.78 : 111,319.91 = 44,857.01 : x
  2. Step 2: Convert to fraction form
    80,672.78/111,319.91 = 44,857.01/x
  3. Step 3: Cross multiply
    80,672.78x = 111,319.91 × 44,857.01
  4. Step 4: Simplify right side
    80,672.78x = 4,993,478,316.07
  5. Step 5: Solve for x
    x = 4,993,478,316.07/80,672.78
  6. Step 6: Final answer
    x = 61,897.93

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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.