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Finding the Fourth Proportional to 172,884, 238,579.92 and 93,396

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Solution

The fourth proportional to 172,884, 238,579.92 and 93,396 is: 128,886.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,884 : 238,579.92 = 93,396 : x
  2. Step 2: Convert to fraction form
    172,884/238,579.92 = 93,396/x
  3. Step 3: Cross multiply
    172,884x = 238,579.92 × 93,396
  4. Step 4: Simplify right side
    172,884x = 22,282,410,208.32
  5. Step 5: Solve for x
    x = 22,282,410,208.32/172,884
  6. Step 6: Final answer
    x = 128,886.48

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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.