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Finding the Fourth Proportional to 251,573.64, 347,166.72 and 138,393.96

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Solution

The fourth proportional to 251,573.64, 347,166.72 and 138,393.96 is: 190,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,573.64 : 347,166.72 = 138,393.96 : x
  2. Step 2: Convert to fraction form
    251,573.64/347,166.72 = 138,393.96/x
  3. Step 3: Cross multiply
    251,573.64x = 347,166.72 × 138,393.96
  4. Step 4: Simplify right side
    251,573.64x = 48,045,777,161.01
  5. Step 5: Solve for x
    x = 48,045,777,161.01/251,573.64
  6. Step 6: Final answer
    x = 190,980.97

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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.