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Finding the Fourth Proportional to 172,913.25, 238,817.12 and 116,226.21

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Solution

The fourth proportional to 172,913.25, 238,817.12 and 116,226.21 is: 160,524.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,913.25 : 238,817.12 = 116,226.21 : x
  2. Step 2: Convert to fraction form
    172,913.25/238,817.12 = 116,226.21/x
  3. Step 3: Cross multiply
    172,913.25x = 238,817.12 × 116,226.21
  4. Step 4: Simplify right side
    172,913.25x = 27,756,808,740.72
  5. Step 5: Solve for x
    x = 27,756,808,740.72/172,913.25
  6. Step 6: Final answer
    x = 160,524.48

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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.