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Finding the Fourth Proportional to 251,292.72, 346,790.52 and 138,118.44

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Solution

The fourth proportional to 251,292.72, 346,790.52 and 138,118.44 is: 190,607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,292.72 : 346,790.52 = 138,118.44 : x
  2. Step 2: Convert to fraction form
    251,292.72/346,790.52 = 138,118.44/x
  3. Step 3: Cross multiply
    251,292.72x = 346,790.52 × 138,118.44
  4. Step 4: Simplify right side
    251,292.72x = 47,898,165,629.19
  5. Step 5: Solve for x
    x = 47,898,165,629.19/251,292.72
  6. Step 6: Final answer
    x = 190,607.06

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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.