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Finding the Fourth Proportional to 216,153.30, 298,279.18 and 120,666.05

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Solution

The fourth proportional to 216,153.30, 298,279.18 and 120,666.05 is: 166,512.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,153.30 : 298,279.18 = 120,666.05 : x
  2. Step 2: Convert to fraction form
    216,153.30/298,279.18 = 120,666.05/x
  3. Step 3: Cross multiply
    216,153.30x = 298,279.18 × 120,666.05
  4. Step 4: Simplify right side
    216,153.30x = 35,992,168,654.78
  5. Step 5: Solve for x
    x = 35,992,168,654.78/216,153.30
  6. Step 6: Final answer
    x = 166,512.23

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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.