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Finding the Fourth Proportional to 157,649.73, 217,556.99 and 89,665.21

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Solution

The fourth proportional to 157,649.73, 217,556.99 and 89,665.21 is: 123,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,649.73 : 217,556.99 = 89,665.21 : x
  2. Step 2: Convert to fraction form
    157,649.73/217,556.99 = 89,665.21/x
  3. Step 3: Cross multiply
    157,649.73x = 217,556.99 × 89,665.21
  4. Step 4: Simplify right side
    157,649.73x = 19,507,293,195.32
  5. Step 5: Solve for x
    x = 19,507,293,195.32/157,649.73
  6. Step 6: Final answer
    x = 123,738.20

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1.5x scale

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.