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Finding the Fourth Proportional to 66,093.36, 91,208.87 and 35,878.67

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Solution

The fourth proportional to 66,093.36, 91,208.87 and 35,878.67 is: 49,512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,093.36 : 91,208.87 = 35,878.67 : x
  2. Step 2: Convert to fraction form
    66,093.36/91,208.87 = 35,878.67/x
  3. Step 3: Cross multiply
    66,093.36x = 91,208.87 × 35,878.67
  4. Step 4: Simplify right side
    66,093.36x = 3,272,452,947.80
  5. Step 5: Solve for x
    x = 3,272,452,947.80/66,093.36
  6. Step 6: Final answer
    x = 49,512.58

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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.