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Finding the Fourth Proportional to 45,858.36, 68,879.70 and 40,075.32

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Solution

The fourth proportional to 45,858.36, 68,879.70 and 40,075.32 is: 60,193.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,858.36 : 68,879.70 = 40,075.32 : x
  2. Step 2: Convert to fraction form
    45,858.36/68,879.70 = 40,075.32/x
  3. Step 3: Cross multiply
    45,858.36x = 68,879.70 × 40,075.32
  4. Step 4: Simplify right side
    45,858.36x = 2,760,376,019.00
  5. Step 5: Solve for x
    x = 2,760,376,019.00/45,858.36
  6. Step 6: Final answer
    x = 60,193.52

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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.