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Finding the Fourth Proportional to 157,805.11, 217,775.99 and 89,820.39

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Solution

The fourth proportional to 157,805.11, 217,775.99 and 89,820.39 is: 123,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,805.11 : 217,775.99 = 89,820.39 : x
  2. Step 2: Convert to fraction form
    157,805.11/217,775.99 = 89,820.39/x
  3. Step 3: Cross multiply
    157,805.11x = 217,775.99 × 89,820.39
  4. Step 4: Simplify right side
    157,805.11x = 19,560,725,395.65
  5. Step 5: Solve for x
    x = 19,560,725,395.65/157,805.11
  6. Step 6: Final answer
    x = 123,954.95

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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.