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Finding the Fourth Proportional to 264,422.88, 396,683.53 and 86,936.90

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Solution

The fourth proportional to 264,422.88, 396,683.53 and 86,936.90 is: 130,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,422.88 : 396,683.53 = 86,936.90 : x
  2. Step 2: Convert to fraction form
    264,422.88/396,683.53 = 86,936.90/x
  3. Step 3: Cross multiply
    264,422.88x = 396,683.53 × 86,936.90
  4. Step 4: Simplify right side
    264,422.88x = 34,486,434,178.50
  5. Step 5: Solve for x
    x = 34,486,434,178.50/264,422.88
  6. Step 6: Final answer
    x = 130,421.52

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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.