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Finding the Fourth Proportional to 80,431.04, 110,978.28 and 44,613.36

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Solution

The fourth proportional to 80,431.04, 110,978.28 and 44,613.36 is: 61,557.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,431.04 : 110,978.28 = 44,613.36 : x
  2. Step 2: Convert to fraction form
    80,431.04/110,978.28 = 44,613.36/x
  3. Step 3: Cross multiply
    80,431.04x = 110,978.28 × 44,613.36
  4. Step 4: Simplify right side
    80,431.04x = 4,951,113,957.82
  5. Step 5: Solve for x
    x = 4,951,113,957.82/80,431.04
  6. Step 6: Final answer
    x = 61,557.25

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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.