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Finding the Fourth Proportional to 91,683.90, 126,550.67 and 59,857.56

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Solution

The fourth proportional to 91,683.90, 126,550.67 and 59,857.56 is: 82,620.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,683.90 : 126,550.67 = 59,857.56 : x
  2. Step 2: Convert to fraction form
    91,683.90/126,550.67 = 59,857.56/x
  3. Step 3: Cross multiply
    91,683.90x = 126,550.67 × 59,857.56
  4. Step 4: Simplify right side
    91,683.90x = 7,575,014,322.57
  5. Step 5: Solve for x
    x = 7,575,014,322.57/91,683.90
  6. Step 6: Final answer
    x = 82,620.99

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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.