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Finding the Fourth Proportional to 121,089.40, 166,893.42 and 114,091

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Solution

The fourth proportional to 121,089.40, 166,893.42 and 114,091 is: 157,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,089.40 : 166,893.42 = 114,091 : x
  2. Step 2: Convert to fraction form
    121,089.40/166,893.42 = 114,091/x
  3. Step 3: Cross multiply
    121,089.40x = 166,893.42 × 114,091
  4. Step 4: Simplify right side
    121,089.40x = 19,041,037,181.22
  5. Step 5: Solve for x
    x = 19,041,037,181.22/121,089.40
  6. Step 6: Final answer
    x = 157,247.76

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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.