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Finding the Fourth Proportional to 66,833.94, 92,197.40 and 39,969.38

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Solution

The fourth proportional to 66,833.94, 92,197.40 and 39,969.38 is: 55,137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,833.94 : 92,197.40 = 39,969.38 : x
  2. Step 2: Convert to fraction form
    66,833.94/92,197.40 = 39,969.38/x
  3. Step 3: Cross multiply
    66,833.94x = 92,197.40 × 39,969.38
  4. Step 4: Simplify right side
    66,833.94x = 3,685,072,915.61
  5. Step 5: Solve for x
    x = 3,685,072,915.61/66,833.94
  6. Step 6: Final answer
    x = 55,137.75

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1.5x scale

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.