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Finding the Fourth Proportional to 172,865, 238,553.70 and 93,377

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Solution

The fourth proportional to 172,865, 238,553.70 and 93,377 is: 128,860.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,865 : 238,553.70 = 93,377 : x
  2. Step 2: Convert to fraction form
    172,865/238,553.70 = 93,377/x
  3. Step 3: Cross multiply
    172,865x = 238,553.70 × 93,377
  4. Step 4: Simplify right side
    172,865x = 22,275,428,844.90
  5. Step 5: Solve for x
    x = 22,275,428,844.90/172,865
  6. Step 6: Final answer
    x = 128,860.26

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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.