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Finding the Fourth Proportional to 117,147, 161,662.62 and 63,432

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Solution

The fourth proportional to 117,147, 161,662.62 and 63,432 is: 87,536.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,147 : 161,662.62 = 63,432 : x
  2. Step 2: Convert to fraction form
    117,147/161,662.62 = 63,432/x
  3. Step 3: Cross multiply
    117,147x = 161,662.62 × 63,432
  4. Step 4: Simplify right side
    117,147x = 10,254,583,311.84
  5. Step 5: Solve for x
    x = 10,254,583,311.84/117,147
  6. Step 6: Final answer
    x = 87,536.03

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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.