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Finding the Fourth Proportional to 60,805.44, 91,346.52 and 43,990.32

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Solution

The fourth proportional to 60,805.44, 91,346.52 and 43,990.32 is: 66,085.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,805.44 : 91,346.52 = 43,990.32 : x
  2. Step 2: Convert to fraction form
    60,805.44/91,346.52 = 43,990.32/x
  3. Step 3: Cross multiply
    60,805.44x = 91,346.52 × 43,990.32
  4. Step 4: Simplify right side
    60,805.44x = 4,018,362,645.69
  5. Step 5: Solve for x
    x = 4,018,362,645.69/60,805.44
  6. Step 6: Final answer
    x = 66,085.58

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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.