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Finding the Fourth Proportional to 218,916.45, 302,093.15 and 122,130.41

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Solution

The fourth proportional to 218,916.45, 302,093.15 and 122,130.41 is: 168,533.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,916.45 : 302,093.15 = 122,130.41 : x
  2. Step 2: Convert to fraction form
    218,916.45/302,093.15 = 122,130.41/x
  3. Step 3: Cross multiply
    218,916.45x = 302,093.15 × 122,130.41
  4. Step 4: Simplify right side
    218,916.45x = 36,894,758,146.57
  5. Step 5: Solve for x
    x = 36,894,758,146.57/218,916.45
  6. Step 6: Final answer
    x = 168,533.51

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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.