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Finding the Fourth Proportional to 66,633.60, 99,951.21 and 37,238.70

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Solution

The fourth proportional to 66,633.60, 99,951.21 and 37,238.70 is: 55,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,633.60 : 99,951.21 = 37,238.70 : x
  2. Step 2: Convert to fraction form
    66,633.60/99,951.21 = 37,238.70/x
  3. Step 3: Cross multiply
    66,633.60x = 99,951.21 × 37,238.70
  4. Step 4: Simplify right side
    66,633.60x = 3,722,053,123.83
  5. Step 5: Solve for x
    x = 3,722,053,123.83/66,633.60
  6. Step 6: Final answer
    x = 55,858.50

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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.