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Finding the Fourth Proportional to 144,602.56, 216,621.34 and 99,615.97

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Solution

The fourth proportional to 144,602.56, 216,621.34 and 99,615.97 is: 149,229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,602.56 : 216,621.34 = 99,615.97 : x
  2. Step 2: Convert to fraction form
    144,602.56/216,621.34 = 99,615.97/x
  3. Step 3: Cross multiply
    144,602.56x = 216,621.34 × 99,615.97
  4. Step 4: Simplify right side
    144,602.56x = 21,578,944,906.80
  5. Step 5: Solve for x
    x = 21,578,944,906.80/144,602.56
  6. Step 6: Final answer
    x = 149,229.34

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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.