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Finding the Fourth Proportional to 186,276.74, 257,022.99 and 121,840.43

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Solution

The fourth proportional to 186,276.74, 257,022.99 and 121,840.43 is: 168,114.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,276.74 : 257,022.99 = 121,840.43 : x
  2. Step 2: Convert to fraction form
    186,276.74/257,022.99 = 121,840.43/x
  3. Step 3: Cross multiply
    186,276.74x = 257,022.99 × 121,840.43
  4. Step 4: Simplify right side
    186,276.74x = 31,315,790,336.37
  5. Step 5: Solve for x
    x = 31,315,790,336.37/186,276.74
  6. Step 6: Final answer
    x = 168,114.34

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.