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Finding the Fourth Proportional to 321,145.08, 482,159.88 and 163,483.44

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Solution

The fourth proportional to 321,145.08, 482,159.88 and 163,483.44 is: 245,450.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,145.08 : 482,159.88 = 163,483.44 : x
  2. Step 2: Convert to fraction form
    321,145.08/482,159.88 = 163,483.44/x
  3. Step 3: Cross multiply
    321,145.08x = 482,159.88 × 163,483.44
  4. Step 4: Simplify right side
    321,145.08x = 78,825,155,812.39
  5. Step 5: Solve for x
    x = 78,825,155,812.39/321,145.08
  6. Step 6: Final answer
    x = 245,450.30

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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.