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Finding the Fourth Proportional to 66,116.57, 99,174.85 and 19,369.44

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Solution

The fourth proportional to 66,116.57, 99,174.85 and 19,369.44 is: 29,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,116.57 : 99,174.85 = 19,369.44 : x
  2. Step 2: Convert to fraction form
    66,116.57/99,174.85 = 19,369.44/x
  3. Step 3: Cross multiply
    66,116.57x = 99,174.85 × 19,369.44
  4. Step 4: Simplify right side
    66,116.57x = 1,920,961,258.16
  5. Step 5: Solve for x
    x = 1,920,961,258.16/66,116.57
  6. Step 6: Final answer
    x = 29,054.16

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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.