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Finding the Fourth Proportional to 96,912.30, 133,741.87 and 58,678.84

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Solution

The fourth proportional to 96,912.30, 133,741.87 and 58,678.84 is: 80,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,912.30 : 133,741.87 = 58,678.84 : x
  2. Step 2: Convert to fraction form
    96,912.30/133,741.87 = 58,678.84/x
  3. Step 3: Cross multiply
    96,912.30x = 133,741.87 × 58,678.84
  4. Step 4: Simplify right side
    96,912.30x = 7,847,817,791.03
  5. Step 5: Solve for x
    x = 7,847,817,791.03/96,912.30
  6. Step 6: Final answer
    x = 80,978.55

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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.