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Finding the Fourth Proportional to 99,767.54, 149,651.31 and 66,552.47

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Solution

The fourth proportional to 99,767.54, 149,651.31 and 66,552.47 is: 99,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,767.54 : 149,651.31 = 66,552.47 : x
  2. Step 2: Convert to fraction form
    99,767.54/149,651.31 = 66,552.47/x
  3. Step 3: Cross multiply
    99,767.54x = 149,651.31 × 66,552.47
  4. Step 4: Simplify right side
    99,767.54x = 9,959,663,570.98
  5. Step 5: Solve for x
    x = 9,959,663,570.98/99,767.54
  6. Step 6: Final answer
    x = 99,828.70

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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.