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Finding the Fourth Proportional to 66,015.16, 99,056.78 and 43,843.88

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Solution

The fourth proportional to 66,015.16, 99,056.78 and 43,843.88 is: 65,788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,015.16 : 99,056.78 = 43,843.88 : x
  2. Step 2: Convert to fraction form
    66,015.16/99,056.78 = 43,843.88/x
  3. Step 3: Cross multiply
    66,015.16x = 99,056.78 × 43,843.88
  4. Step 4: Simplify right side
    66,015.16x = 4,343,033,575.51
  5. Step 5: Solve for x
    x = 4,343,033,575.51/66,015.16
  6. Step 6: Final answer
    x = 65,788.43

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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.