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Finding the Fourth Proportional to 91,958.76, 126,910.44 and 51,674.40

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Solution

The fourth proportional to 91,958.76, 126,910.44 and 51,674.40 is: 71,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,958.76 : 126,910.44 = 51,674.40 : x
  2. Step 2: Convert to fraction form
    91,958.76/126,910.44 = 51,674.40/x
  3. Step 3: Cross multiply
    91,958.76x = 126,910.44 × 51,674.40
  4. Step 4: Simplify right side
    91,958.76x = 6,558,020,840.74
  5. Step 5: Solve for x
    x = 6,558,020,840.74/91,958.76
  6. Step 6: Final answer
    x = 71,314.80

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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.