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Finding the Fourth Proportional to 66,880.31, 92,304.21 and 41,394.83

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Solution

The fourth proportional to 66,880.31, 92,304.21 and 41,394.83 is: 57,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,880.31 : 92,304.21 = 41,394.83 : x
  2. Step 2: Convert to fraction form
    66,880.31/92,304.21 = 41,394.83/x
  3. Step 3: Cross multiply
    66,880.31x = 92,304.21 × 41,394.83
  4. Step 4: Simplify right side
    66,880.31x = 3,820,916,619.71
  5. Step 5: Solve for x
    x = 3,820,916,619.71/66,880.31
  6. Step 6: Final answer
    x = 57,130.67

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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.