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Finding the Fourth Proportional to 216,607.37, 298,917.14 and 121,114.04

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Solution

The fourth proportional to 216,607.37, 298,917.14 and 121,114.04 is: 167,136.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,607.37 : 298,917.14 = 121,114.04 : x
  2. Step 2: Convert to fraction form
    216,607.37/298,917.14 = 121,114.04/x
  3. Step 3: Cross multiply
    216,607.37x = 298,917.14 × 121,114.04
  4. Step 4: Simplify right side
    216,607.37x = 36,203,060,350.49
  5. Step 5: Solve for x
    x = 36,203,060,350.49/216,607.37
  6. Step 6: Final answer
    x = 167,136.79

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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.