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Finding the Fourth Proportional to 66,422.70, 99,698.85 and 33,180.30

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Solution

The fourth proportional to 66,422.70, 99,698.85 and 33,180.30 is: 49,802.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.70 : 99,698.85 = 33,180.30 : x
  2. Step 2: Convert to fraction form
    66,422.70/99,698.85 = 33,180.30/x
  3. Step 3: Cross multiply
    66,422.70x = 99,698.85 × 33,180.30
  4. Step 4: Simplify right side
    66,422.70x = 3,308,037,752.66
  5. Step 5: Solve for x
    x = 3,308,037,752.66/66,422.70
  6. Step 6: Final answer
    x = 49,802.82

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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.