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Finding the Fourth Proportional to 66,927.40, 100,385.64 and 22,553.20

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Solution

The fourth proportional to 66,927.40, 100,385.64 and 22,553.20 is: 33,827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,927.40 : 100,385.64 = 22,553.20 : x
  2. Step 2: Convert to fraction form
    66,927.40/100,385.64 = 22,553.20/x
  3. Step 3: Cross multiply
    66,927.40x = 100,385.64 × 22,553.20
  4. Step 4: Simplify right side
    66,927.40x = 2,264,017,416.05
  5. Step 5: Solve for x
    x = 2,264,017,416.05/66,927.40
  6. Step 6: Final answer
    x = 33,827.96

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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.