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Finding the Fourth Proportional to 80,490.98, 111,071.99 and 44,678.17

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Solution

The fourth proportional to 80,490.98, 111,071.99 and 44,678.17 is: 61,652.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490.98 : 111,071.99 = 44,678.17 : x
  2. Step 2: Convert to fraction form
    80,490.98/111,071.99 = 44,678.17/x
  3. Step 3: Cross multiply
    80,490.98x = 111,071.99 × 44,678.17
  4. Step 4: Simplify right side
    80,490.98x = 4,962,493,085.47
  5. Step 5: Solve for x
    x = 4,962,493,085.47/80,490.98
  6. Step 6: Final answer
    x = 61,652.79

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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.