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Finding the Fourth Proportional to 53,431.20, 80,146.80 and 44,974.80

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Solution

The fourth proportional to 53,431.20, 80,146.80 and 44,974.80 is: 67,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,431.20 : 80,146.80 = 44,974.80 : x
  2. Step 2: Convert to fraction form
    53,431.20/80,146.80 = 44,974.80/x
  3. Step 3: Cross multiply
    53,431.20x = 80,146.80 × 44,974.80
  4. Step 4: Simplify right side
    53,431.20x = 3,604,586,300.64
  5. Step 5: Solve for x
    x = 3,604,586,300.64/53,431.20
  6. Step 6: Final answer
    x = 67,462.20

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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.