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Finding the Fourth Proportional to 91,713.96, 126,511.51 and 57,668.49

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Solution

The fourth proportional to 91,713.96, 126,511.51 and 57,668.49 is: 79,548.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,713.96 : 126,511.51 = 57,668.49 : x
  2. Step 2: Convert to fraction form
    91,713.96/126,511.51 = 57,668.49/x
  3. Step 3: Cross multiply
    91,713.96x = 126,511.51 × 57,668.49
  4. Step 4: Simplify right side
    91,713.96x = 7,295,727,749.32
  5. Step 5: Solve for x
    x = 7,295,727,749.32/91,713.96
  6. Step 6: Final answer
    x = 79,548.72

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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.