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Finding the Fourth Proportional to 607,638.66, 911,556.81 and 186,914.94

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Solution

The fourth proportional to 607,638.66, 911,556.81 and 186,914.94 is: 280,402.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,638.66 : 911,556.81 = 186,914.94 : x
  2. Step 2: Convert to fraction form
    607,638.66/911,556.81 = 186,914.94/x
  3. Step 3: Cross multiply
    607,638.66x = 911,556.81 × 186,914.94
  4. Step 4: Simplify right side
    607,638.66x = 170,383,586,447.74
  5. Step 5: Solve for x
    x = 170,383,586,447.74/607,638.66
  6. Step 6: Final answer
    x = 280,402.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.