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Finding the Fourth Proportional to 121,000.68, 166,975.56 and 70,010.78

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Solution

The fourth proportional to 121,000.68, 166,975.56 and 70,010.78 is: 96,611.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,000.68 : 166,975.56 = 70,010.78 : x
  2. Step 2: Convert to fraction form
    121,000.68/166,975.56 = 70,010.78/x
  3. Step 3: Cross multiply
    121,000.68x = 166,975.56 × 70,010.78
  4. Step 4: Simplify right side
    121,000.68x = 11,690,088,361.66
  5. Step 5: Solve for x
    x = 11,690,088,361.66/121,000.68
  6. Step 6: Final answer
    x = 96,611.76

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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.