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Finding the Fourth Proportional to 190,387.94, 262,746.41 and 109,818.86

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Solution

The fourth proportional to 190,387.94, 262,746.41 and 109,818.86 is: 151,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,387.94 : 262,746.41 = 109,818.86 : x
  2. Step 2: Convert to fraction form
    190,387.94/262,746.41 = 109,818.86/x
  3. Step 3: Cross multiply
    190,387.94x = 262,746.41 × 109,818.86
  4. Step 4: Simplify right side
    190,387.94x = 28,854,511,215.29
  5. Step 5: Solve for x
    x = 28,854,511,215.29/190,387.94
  6. Step 6: Final answer
    x = 151,556.40

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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.