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Finding the Fourth Proportional to 66,427.83, 91,668.28 and 36,212.67

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Solution

The fourth proportional to 66,427.83, 91,668.28 and 36,212.67 is: 49,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,427.83 : 91,668.28 = 36,212.67 : x
  2. Step 2: Convert to fraction form
    66,427.83/91,668.28 = 36,212.67/x
  3. Step 3: Cross multiply
    66,427.83x = 91,668.28 × 36,212.67
  4. Step 4: Simplify right side
    66,427.83x = 3,319,553,173.11
  5. Step 5: Solve for x
    x = 3,319,553,173.11/66,427.83
  6. Step 6: Final answer
    x = 49,972.33

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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.