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Finding the Fourth Proportional to 67,693.80, 91,455.75 and 67,693.80

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Solution

The fourth proportional to 67,693.80, 91,455.75 and 67,693.80 is: 91,455.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,693.80 : 91,455.75 = 67,693.80 : x
  2. Step 2: Convert to fraction form
    67,693.80/91,455.75 = 67,693.80/x
  3. Step 3: Cross multiply
    67,693.80x = 91,455.75 × 67,693.80
  4. Step 4: Simplify right side
    67,693.80x = 6,190,987,249.35
  5. Step 5: Solve for x
    x = 6,190,987,249.35/67,693.80
  6. Step 6: Final answer
    x = 91,455.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.