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Finding the Fourth Proportional to 162,616.67, 243,962.06 and 87,735.41

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Solution

The fourth proportional to 162,616.67, 243,962.06 and 87,735.41 is: 131,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,616.67 : 243,962.06 = 87,735.41 : x
  2. Step 2: Convert to fraction form
    162,616.67/243,962.06 = 87,735.41/x
  3. Step 3: Cross multiply
    162,616.67x = 243,962.06 × 87,735.41
  4. Step 4: Simplify right side
    162,616.67x = 21,404,110,919.87
  5. Step 5: Solve for x
    x = 21,404,110,919.87/162,616.67
  6. Step 6: Final answer
    x = 131,623.10

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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.