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Finding the Fourth Proportional to 169,906.42, 234,476.88 and 93,431.32

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Solution

The fourth proportional to 169,906.42, 234,476.88 and 93,431.32 is: 128,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,906.42 : 234,476.88 = 93,431.32 : x
  2. Step 2: Convert to fraction form
    169,906.42/234,476.88 = 93,431.32/x
  3. Step 3: Cross multiply
    169,906.42x = 234,476.88 × 93,431.32
  4. Step 4: Simplify right side
    169,906.42x = 21,907,483,471.32
  5. Step 5: Solve for x
    x = 21,907,483,471.32/169,906.42
  6. Step 6: Final answer
    x = 128,938.53

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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.