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Finding the Fourth Proportional to 157,447.01, 217,268.69 and 89,454.56

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Solution

The fourth proportional to 157,447.01, 217,268.69 and 89,454.56 is: 123,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,447.01 : 217,268.69 = 89,454.56 : x
  2. Step 2: Convert to fraction form
    157,447.01/217,268.69 = 89,454.56/x
  3. Step 3: Cross multiply
    157,447.01x = 217,268.69 × 89,454.56
  4. Step 4: Simplify right side
    157,447.01x = 19,435,673,532.11
  5. Step 5: Solve for x
    x = 19,435,673,532.11/157,447.01
  6. Step 6: Final answer
    x = 123,442.63

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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.