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Finding the Fourth Proportional to 172,812, 238,480.56 and 93,324

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Solution

The fourth proportional to 172,812, 238,480.56 and 93,324 is: 128,787.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,812 : 238,480.56 = 93,324 : x
  2. Step 2: Convert to fraction form
    172,812/238,480.56 = 93,324/x
  3. Step 3: Cross multiply
    172,812x = 238,480.56 × 93,324
  4. Step 4: Simplify right side
    172,812x = 22,255,959,781.44
  5. Step 5: Solve for x
    x = 22,255,959,781.44/172,812
  6. Step 6: Final answer
    x = 128,787.12

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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.