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Finding the Fourth Proportional to 45,019.88, 62,128.32 and 29,132

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Solution

The fourth proportional to 45,019.88, 62,128.32 and 29,132 is: 40,202.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,019.88 : 62,128.32 = 29,132 : x
  2. Step 2: Convert to fraction form
    45,019.88/62,128.32 = 29,132/x
  3. Step 3: Cross multiply
    45,019.88x = 62,128.32 × 29,132
  4. Step 4: Simplify right side
    45,019.88x = 1,809,922,218.24
  5. Step 5: Solve for x
    x = 1,809,922,218.24/45,019.88
  6. Step 6: Final answer
    x = 40,202.73

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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.