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Finding the Fourth Proportional to 153,604.44, 211,978.62 and 89,936.28

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Solution

The fourth proportional to 153,604.44, 211,978.62 and 89,936.28 is: 124,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,604.44 : 211,978.62 = 89,936.28 : x
  2. Step 2: Convert to fraction form
    153,604.44/211,978.62 = 89,936.28/x
  3. Step 3: Cross multiply
    153,604.44x = 211,978.62 × 89,936.28
  4. Step 4: Simplify right side
    153,604.44x = 19,064,568,522.33
  5. Step 5: Solve for x
    x = 19,064,568,522.33/153,604.44
  6. Step 6: Final answer
    x = 124,114.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.