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Finding the Fourth Proportional to 66,676.16, 100,041.89 and 29,216.80

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Solution

The fourth proportional to 66,676.16, 100,041.89 and 29,216.80 is: 43,837.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,676.16 : 100,041.89 = 29,216.80 : x
  2. Step 2: Convert to fraction form
    66,676.16/100,041.89 = 29,216.80/x
  3. Step 3: Cross multiply
    66,676.16x = 100,041.89 × 29,216.80
  4. Step 4: Simplify right side
    66,676.16x = 2,922,903,870.72
  5. Step 5: Solve for x
    x = 2,922,903,870.72/66,676.16
  6. Step 6: Final answer
    x = 43,837.31

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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.