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Finding the Fourth Proportional to 157,226.90, 216,968.37 and 87,375.96

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Solution

The fourth proportional to 157,226.90, 216,968.37 and 87,375.96 is: 120,576.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,226.90 : 216,968.37 = 87,375.96 : x
  2. Step 2: Convert to fraction form
    157,226.90/216,968.37 = 87,375.96/x
  3. Step 3: Cross multiply
    157,226.90x = 216,968.37 × 87,375.96
  4. Step 4: Simplify right side
    157,226.90x = 18,957,819,618.39
  5. Step 5: Solve for x
    x = 18,957,819,618.39/157,226.90
  6. Step 6: Final answer
    x = 120,576.19

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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.