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Finding the Fourth Proportional to 66,696.40, 92,048.97 and 38,407.60

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Solution

The fourth proportional to 66,696.40, 92,048.97 and 38,407.60 is: 53,007.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,696.40 : 92,048.97 = 38,407.60 : x
  2. Step 2: Convert to fraction form
    66,696.40/92,048.97 = 38,407.60/x
  3. Step 3: Cross multiply
    66,696.40x = 92,048.97 × 38,407.60
  4. Step 4: Simplify right side
    66,696.40x = 3,535,380,020.17
  5. Step 5: Solve for x
    x = 3,535,380,020.17/66,696.40
  6. Step 6: Final answer
    x = 53,007.06

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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.