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Finding the Fourth Proportional to 60,771.60, 91,011.60 and 49,107.60

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Solution

The fourth proportional to 60,771.60, 91,011.60 and 49,107.60 is: 73,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,771.60 : 91,011.60 = 49,107.60 : x
  2. Step 2: Convert to fraction form
    60,771.60/91,011.60 = 49,107.60/x
  3. Step 3: Cross multiply
    60,771.60x = 91,011.60 × 49,107.60
  4. Step 4: Simplify right side
    60,771.60x = 4,469,361,248.16
  5. Step 5: Solve for x
    x = 4,469,361,248.16/60,771.60
  6. Step 6: Final answer
    x = 73,543.58

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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.