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Finding the Fourth Proportional to 129,093.60, 193,640.40 and 89,727.60

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Solution

The fourth proportional to 129,093.60, 193,640.40 and 89,727.60 is: 134,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,093.60 : 193,640.40 = 89,727.60 : x
  2. Step 2: Convert to fraction form
    129,093.60/193,640.40 = 89,727.60/x
  3. Step 3: Cross multiply
    129,093.60x = 193,640.40 × 89,727.60
  4. Step 4: Simplify right side
    129,093.60x = 17,374,888,355.04
  5. Step 5: Solve for x
    x = 17,374,888,355.04/129,093.60
  6. Step 6: Final answer
    x = 134,591.40

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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.