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Finding the Fourth Proportional to 93,157.75, 128,558 and 50,716.59

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Solution

The fourth proportional to 93,157.75, 128,558 and 50,716.59 is: 69,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,157.75 : 128,558 = 50,716.59 : x
  2. Step 2: Convert to fraction form
    93,157.75/128,558 = 50,716.59/x
  3. Step 3: Cross multiply
    93,157.75x = 128,558 × 50,716.59
  4. Step 4: Simplify right side
    93,157.75x = 6,520,022,734.43
  5. Step 5: Solve for x
    x = 6,520,022,734.43/93,157.75
  6. Step 6: Final answer
    x = 69,989.05

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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.