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Finding the Fourth Proportional to 66,263.67, 99,398.70 and 21,889.44

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Solution

The fourth proportional to 66,263.67, 99,398.70 and 21,889.44 is: 32,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,263.67 : 99,398.70 = 21,889.44 : x
  2. Step 2: Convert to fraction form
    66,263.67/99,398.70 = 21,889.44/x
  3. Step 3: Cross multiply
    66,263.67x = 99,398.70 × 21,889.44
  4. Step 4: Simplify right side
    66,263.67x = 2,175,781,879.73
  5. Step 5: Solve for x
    x = 2,175,781,879.73/66,263.67
  6. Step 6: Final answer
    x = 32,835.22

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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.