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Finding the Fourth Proportional to 72,587.68, 108,912.33 and 35,175.60

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Solution

The fourth proportional to 72,587.68, 108,912.33 and 35,175.60 is: 52,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,587.68 : 108,912.33 = 35,175.60 : x
  2. Step 2: Convert to fraction form
    72,587.68/108,912.33 = 35,175.60/x
  3. Step 3: Cross multiply
    72,587.68x = 108,912.33 × 35,175.60
  4. Step 4: Simplify right side
    72,587.68x = 3,831,056,555.15
  5. Step 5: Solve for x
    x = 3,831,056,555.15/72,587.68
  6. Step 6: Final answer
    x = 52,778.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.