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Finding the Fourth Proportional to 53,915.70, 80,873.55 and 49,077.30

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Solution

The fourth proportional to 53,915.70, 80,873.55 and 49,077.30 is: 73,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,915.70 : 80,873.55 = 49,077.30 : x
  2. Step 2: Convert to fraction form
    53,915.70/80,873.55 = 49,077.30/x
  3. Step 3: Cross multiply
    53,915.70x = 80,873.55 × 49,077.30
  4. Step 4: Simplify right side
    53,915.70x = 3,969,055,475.42
  5. Step 5: Solve for x
    x = 3,969,055,475.42/53,915.70
  6. Step 6: Final answer
    x = 73,615.95

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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.