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Finding the Fourth Proportional to 172,874.76, 238,408.62 and 118,505.94

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Solution

The fourth proportional to 172,874.76, 238,408.62 and 118,505.94 is: 163,429.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,874.76 : 238,408.62 = 118,505.94 : x
  2. Step 2: Convert to fraction form
    172,874.76/238,408.62 = 118,505.94/x
  3. Step 3: Cross multiply
    172,874.76x = 238,408.62 × 118,505.94
  4. Step 4: Simplify right side
    172,874.76x = 28,252,837,617.20
  5. Step 5: Solve for x
    x = 28,252,837,617.20/172,874.76
  6. Step 6: Final answer
    x = 163,429.51

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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.