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Finding the Fourth Proportional to 91,217.98, 125,879.60 and 50,932.42

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Solution

The fourth proportional to 91,217.98, 125,879.60 and 50,932.42 is: 70,286.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,217.98 : 125,879.60 = 50,932.42 : x
  2. Step 2: Convert to fraction form
    91,217.98/125,879.60 = 50,932.42/x
  3. Step 3: Cross multiply
    91,217.98x = 125,879.60 × 50,932.42
  4. Step 4: Simplify right side
    91,217.98x = 6,411,352,656.63
  5. Step 5: Solve for x
    x = 6,411,352,656.63/91,217.98
  6. Step 6: Final answer
    x = 70,286.06

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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.