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Finding the Fourth Proportional to 93,213.81, 128,635.43 and 50,771.97

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Solution

The fourth proportional to 93,213.81, 128,635.43 and 50,771.97 is: 70,065.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,213.81 : 128,635.43 = 50,771.97 : x
  2. Step 2: Convert to fraction form
    93,213.81/128,635.43 = 50,771.97/x
  3. Step 3: Cross multiply
    93,213.81x = 128,635.43 × 50,771.97
  4. Step 4: Simplify right side
    93,213.81x = 6,531,073,939.04
  5. Step 5: Solve for x
    x = 6,531,073,939.04/93,213.81
  6. Step 6: Final answer
    x = 70,065.52

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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.