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Finding the Fourth Proportional to 66,097.74, 91,189.80 and 43,448.94

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Solution

The fourth proportional to 66,097.74, 91,189.80 and 43,448.94 is: 59,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,097.74 : 91,189.80 = 43,448.94 : x
  2. Step 2: Convert to fraction form
    66,097.74/91,189.80 = 43,448.94/x
  3. Step 3: Cross multiply
    66,097.74x = 91,189.80 × 43,448.94
  4. Step 4: Simplify right side
    66,097.74x = 3,962,100,148.81
  5. Step 5: Solve for x
    x = 3,962,100,148.81/66,097.74
  6. Step 6: Final answer
    x = 59,943.05

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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.