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Finding the Fourth Proportional to 485,936.08, 728,898.86 and 166,084.90

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Solution

The fourth proportional to 485,936.08, 728,898.86 and 166,084.90 is: 249,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,936.08 : 728,898.86 = 166,084.90 : x
  2. Step 2: Convert to fraction form
    485,936.08/728,898.86 = 166,084.90/x
  3. Step 3: Cross multiply
    485,936.08x = 728,898.86 × 166,084.90
  4. Step 4: Simplify right side
    485,936.08x = 121,059,093,442.79
  5. Step 5: Solve for x
    x = 121,059,093,442.79/485,936.08
  6. Step 6: Final answer
    x = 249,125.55

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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.