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Finding the Fourth Proportional to 251,950.30, 347,691.40 and 138,773.05

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Solution

The fourth proportional to 251,950.30, 347,691.40 and 138,773.05 is: 191,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,950.30 : 347,691.40 = 138,773.05 : x
  2. Step 2: Convert to fraction form
    251,950.30/347,691.40 = 138,773.05/x
  3. Step 3: Cross multiply
    251,950.30x = 347,691.40 × 138,773.05
  4. Step 4: Simplify right side
    251,950.30x = 48,250,194,820.61
  5. Step 5: Solve for x
    x = 48,250,194,820.61/251,950.30
  6. Step 6: Final answer
    x = 191,506.80

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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.