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Finding the Fourth Proportional to 153,245.52, 211,504.16 and 89,571.02

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Solution

The fourth proportional to 153,245.52, 211,504.16 and 89,571.02 is: 123,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,245.52 : 211,504.16 = 89,571.02 : x
  2. Step 2: Convert to fraction form
    153,245.52/211,504.16 = 89,571.02/x
  3. Step 3: Cross multiply
    153,245.52x = 211,504.16 × 89,571.02
  4. Step 4: Simplify right side
    153,245.52x = 18,944,642,511.85
  5. Step 5: Solve for x
    x = 18,944,642,511.85/153,245.52
  6. Step 6: Final answer
    x = 123,622.81

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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.