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Finding the Fourth Proportional to 66,520.85, 99,798.56 and 33,239.57

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Solution

The fourth proportional to 66,520.85, 99,798.56 and 33,239.57 is: 49,867.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,520.85 : 99,798.56 = 33,239.57 : x
  2. Step 2: Convert to fraction form
    66,520.85/99,798.56 = 33,239.57/x
  3. Step 3: Cross multiply
    66,520.85x = 99,798.56 × 33,239.57
  4. Step 4: Simplify right side
    66,520.85x = 3,317,260,555.83
  5. Step 5: Solve for x
    x = 3,317,260,555.83/66,520.85
  6. Step 6: Final answer
    x = 49,867.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.