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Finding the Fourth Proportional to 251,689.44, 347,333.88 and 138,514.80

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Solution

The fourth proportional to 251,689.44, 347,333.88 and 138,514.80 is: 191,151.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,689.44 : 347,333.88 = 138,514.80 : x
  2. Step 2: Convert to fraction form
    251,689.44/347,333.88 = 138,514.80/x
  3. Step 3: Cross multiply
    251,689.44x = 347,333.88 × 138,514.80
  4. Step 4: Simplify right side
    251,689.44x = 48,110,882,921.42
  5. Step 5: Solve for x
    x = 48,110,882,921.42/251,689.44
  6. Step 6: Final answer
    x = 191,151.77

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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.