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Finding the Fourth Proportional to 172,946, 238,665.48 and 93,458

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Solution

The fourth proportional to 172,946, 238,665.48 and 93,458 is: 128,972.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,946 : 238,665.48 = 93,458 : x
  2. Step 2: Convert to fraction form
    172,946/238,665.48 = 93,458/x
  3. Step 3: Cross multiply
    172,946x = 238,665.48 × 93,458
  4. Step 4: Simplify right side
    172,946x = 22,305,198,429.84
  5. Step 5: Solve for x
    x = 22,305,198,429.84/172,946
  6. Step 6: Final answer
    x = 128,972.04

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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.