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Finding the Fourth Proportional to 167,428.72, 230,629.15 and 135,072.74

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Solution

The fourth proportional to 167,428.72, 230,629.15 and 135,072.74 is: 186,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,428.72 : 230,629.15 = 135,072.74 : x
  2. Step 2: Convert to fraction form
    167,428.72/230,629.15 = 135,072.74/x
  3. Step 3: Cross multiply
    167,428.72x = 230,629.15 × 135,072.74
  4. Step 4: Simplify right side
    167,428.72x = 31,151,710,593.79
  5. Step 5: Solve for x
    x = 31,151,710,593.79/167,428.72
  6. Step 6: Final answer
    x = 186,059.54

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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.