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Finding the Fourth Proportional to 121,652.23, 167,878.39 and 70,693.76

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Solution

The fourth proportional to 121,652.23, 167,878.39 and 70,693.76 is: 97,556.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,652.23 : 167,878.39 = 70,693.76 : x
  2. Step 2: Convert to fraction form
    121,652.23/167,878.39 = 70,693.76/x
  3. Step 3: Cross multiply
    121,652.23x = 167,878.39 × 70,693.76
  4. Step 4: Simplify right side
    121,652.23x = 11,867,954,611.85
  5. Step 5: Solve for x
    x = 11,867,954,611.85/121,652.23
  6. Step 6: Final answer
    x = 97,556.41

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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.