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Finding the Fourth Proportional to 157,906.56, 217,904.52 and 93,417.60

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Solution

The fourth proportional to 157,906.56, 217,904.52 and 93,417.60 is: 128,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,906.56 : 217,904.52 = 93,417.60 : x
  2. Step 2: Convert to fraction form
    157,906.56/217,904.52 = 93,417.60/x
  3. Step 3: Cross multiply
    157,906.56x = 217,904.52 × 93,417.60
  4. Step 4: Simplify right side
    157,906.56x = 20,356,117,287.55
  5. Step 5: Solve for x
    x = 20,356,117,287.55/157,906.56
  6. Step 6: Final answer
    x = 128,912.42

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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.