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Finding the Fourth Proportional to 352,330.82, 528,514.66 and 99,629.80

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Solution

The fourth proportional to 352,330.82, 528,514.66 and 99,629.80 is: 149,449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,330.82 : 528,514.66 = 99,629.80 : x
  2. Step 2: Convert to fraction form
    352,330.82/528,514.66 = 99,629.80/x
  3. Step 3: Cross multiply
    352,330.82x = 528,514.66 × 99,629.80
  4. Step 4: Simplify right side
    352,330.82x = 52,655,809,872.87
  5. Step 5: Solve for x
    x = 52,655,809,872.87/352,330.82
  6. Step 6: Final answer
    x = 149,449.91

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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.