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Finding the Fourth Proportional to 120,804.40, 166,713.96 and 67,090.06

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Solution

The fourth proportional to 120,804.40, 166,713.96 and 67,090.06 is: 92,586.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,804.40 : 166,713.96 = 67,090.06 : x
  2. Step 2: Convert to fraction form
    120,804.40/166,713.96 = 67,090.06/x
  3. Step 3: Cross multiply
    120,804.40x = 166,713.96 × 67,090.06
  4. Step 4: Simplify right side
    120,804.40x = 11,184,849,579.24
  5. Step 5: Solve for x
    x = 11,184,849,579.24/120,804.40
  6. Step 6: Final answer
    x = 92,586.44

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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.