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Finding the Fourth Proportional to 57,959.12, 79,959.48 and 39,063.44

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Solution

The fourth proportional to 57,959.12, 79,959.48 and 39,063.44 is: 53,891.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,959.12 : 79,959.48 = 39,063.44 : x
  2. Step 2: Convert to fraction form
    57,959.12/79,959.48 = 39,063.44/x
  3. Step 3: Cross multiply
    57,959.12x = 79,959.48 × 39,063.44
  4. Step 4: Simplify right side
    57,959.12x = 3,123,492,349.41
  5. Step 5: Solve for x
    x = 3,123,492,349.41/57,959.12
  6. Step 6: Final answer
    x = 53,891.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.