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Finding the Fourth Proportional to 66,570.34, 91,844.94 and 43,920.58

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Solution

The fourth proportional to 66,570.34, 91,844.94 and 43,920.58 is: 60,595.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,570.34 : 91,844.94 = 43,920.58 : x
  2. Step 2: Convert to fraction form
    66,570.34/91,844.94 = 43,920.58/x
  3. Step 3: Cross multiply
    66,570.34x = 91,844.94 × 43,920.58
  4. Step 4: Simplify right side
    66,570.34x = 4,033,883,034.87
  5. Step 5: Solve for x
    x = 4,033,883,034.87/66,570.34
  6. Step 6: Final answer
    x = 60,595.80

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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.