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Finding the Fourth Proportional to 75,846.80, 113,899.80 and 49,667.60

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Solution

The fourth proportional to 75,846.80, 113,899.80 and 49,667.60 is: 74,586.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,846.80 : 113,899.80 = 49,667.60 : x
  2. Step 2: Convert to fraction form
    75,846.80/113,899.80 = 49,667.60/x
  3. Step 3: Cross multiply
    75,846.80x = 113,899.80 × 49,667.60
  4. Step 4: Simplify right side
    75,846.80x = 5,657,129,706.48
  5. Step 5: Solve for x
    x = 5,657,129,706.48/75,846.80
  6. Step 6: Final answer
    x = 74,586.27

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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.