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Finding the Fourth Proportional to 172,866, 238,555.08 and 93,378

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Solution

The fourth proportional to 172,866, 238,555.08 and 93,378 is: 128,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,866 : 238,555.08 = 93,378 : x
  2. Step 2: Convert to fraction form
    172,866/238,555.08 = 93,378/x
  3. Step 3: Cross multiply
    172,866x = 238,555.08 × 93,378
  4. Step 4: Simplify right side
    172,866x = 22,275,796,260.24
  5. Step 5: Solve for x
    x = 22,275,796,260.24/172,866
  6. Step 6: Final answer
    x = 128,861.64

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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.