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Finding the Fourth Proportional to 61,216.80, 91,825.20 and 60,633.60

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Solution

The fourth proportional to 61,216.80, 91,825.20 and 60,633.60 is: 90,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.80 : 91,825.20 = 60,633.60 : x
  2. Step 2: Convert to fraction form
    61,216.80/91,825.20 = 60,633.60/x
  3. Step 3: Cross multiply
    61,216.80x = 91,825.20 × 60,633.60
  4. Step 4: Simplify right side
    61,216.80x = 5,567,692,446.72
  5. Step 5: Solve for x
    x = 5,567,692,446.72/61,216.80
  6. Step 6: Final answer
    x = 90,950.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.