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Finding the Fourth Proportional to 120,693.96, 166,552.74 and 66,981.24

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Solution

The fourth proportional to 120,693.96, 166,552.74 and 66,981.24 is: 92,431.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,693.96 : 166,552.74 = 66,981.24 : x
  2. Step 2: Convert to fraction form
    120,693.96/166,552.74 = 66,981.24/x
  3. Step 3: Cross multiply
    120,693.96x = 166,552.74 × 66,981.24
  4. Step 4: Simplify right side
    120,693.96x = 11,155,909,050.60
  5. Step 5: Solve for x
    x = 11,155,909,050.60/120,693.96
  6. Step 6: Final answer
    x = 92,431.38

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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.