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Finding the Fourth Proportional to 60,986.80, 91,480.20 and 50,618.80

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Solution

The fourth proportional to 60,986.80, 91,480.20 and 50,618.80 is: 75,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,986.80 : 91,480.20 = 50,618.80 : x
  2. Step 2: Convert to fraction form
    60,986.80/91,480.20 = 50,618.80/x
  3. Step 3: Cross multiply
    60,986.80x = 91,480.20 × 50,618.80
  4. Step 4: Simplify right side
    60,986.80x = 4,630,617,947.76
  5. Step 5: Solve for x
    x = 4,630,617,947.76/60,986.80
  6. Step 6: Final answer
    x = 75,928.20

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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.