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Finding the Fourth Proportional to 66,974.94, 92,423.88 and 43,101.60

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Solution

The fourth proportional to 66,974.94, 92,423.88 and 43,101.60 is: 59,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,974.94 : 92,423.88 = 43,101.60 : x
  2. Step 2: Convert to fraction form
    66,974.94/92,423.88 = 43,101.60/x
  3. Step 3: Cross multiply
    66,974.94x = 92,423.88 × 43,101.60
  4. Step 4: Simplify right side
    66,974.94x = 3,983,617,106.21
  5. Step 5: Solve for x
    x = 3,983,617,106.21/66,974.94
  6. Step 6: Final answer
    x = 59,479.22

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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.