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Finding the Fourth Proportional to 321,967.68, 482,905.04 and 108,696.90

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Solution

The fourth proportional to 321,967.68, 482,905.04 and 108,696.90 is: 163,029.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,967.68 : 482,905.04 = 108,696.90 : x
  2. Step 2: Convert to fraction form
    321,967.68/482,905.04 = 108,696.90/x
  3. Step 3: Cross multiply
    321,967.68x = 482,905.04 × 108,696.90
  4. Step 4: Simplify right side
    321,967.68x = 52,490,280,842.38
  5. Step 5: Solve for x
    x = 52,490,280,842.38/321,967.68
  6. Step 6: Final answer
    x = 163,029.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.