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Finding the Fourth Proportional to 321,860.61, 482,807.31 and 108,636.31

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Solution

The fourth proportional to 321,860.61, 482,807.31 and 108,636.31 is: 162,960.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,860.61 : 482,807.31 = 108,636.31 : x
  2. Step 2: Convert to fraction form
    321,860.61/482,807.31 = 108,636.31/x
  3. Step 3: Cross multiply
    321,860.61x = 482,807.31 × 108,636.31
  4. Step 4: Simplify right side
    321,860.61x = 52,450,403,664.00
  5. Step 5: Solve for x
    x = 52,450,403,664.00/321,860.61
  6. Step 6: Final answer
    x = 162,960.00

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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.