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Finding the Fourth Proportional to 120,655.50, 166,504.62 and 66,949.26

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Solution

The fourth proportional to 120,655.50, 166,504.62 and 66,949.26 is: 92,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,655.50 : 166,504.62 = 66,949.26 : x
  2. Step 2: Convert to fraction form
    120,655.50/166,504.62 = 66,949.26/x
  3. Step 3: Cross multiply
    120,655.50x = 166,504.62 × 66,949.26
  4. Step 4: Simplify right side
    120,655.50x = 11,147,361,095.58
  5. Step 5: Solve for x
    x = 11,147,361,095.58/120,655.50
  6. Step 6: Final answer
    x = 92,390.00

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1.5x scale

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.