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Finding the Fourth Proportional to 66,570.36, 91,866.63 and 36,355.69

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Solution

The fourth proportional to 66,570.36, 91,866.63 and 36,355.69 is: 50,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,570.36 : 91,866.63 = 36,355.69 : x
  2. Step 2: Convert to fraction form
    66,570.36/91,866.63 = 36,355.69/x
  3. Step 3: Cross multiply
    66,570.36x = 91,866.63 × 36,355.69
  4. Step 4: Simplify right side
    66,570.36x = 3,339,874,721.62
  5. Step 5: Solve for x
    x = 3,339,874,721.62/66,570.36
  6. Step 6: Final answer
    x = 50,170.60

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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.