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Finding the Fourth Proportional to 6,512,489.92, 8,978,976.72 and 4,654,125.04

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Solution

The fourth proportional to 6,512,489.92, 8,978,976.72 and 4,654,125.04 is: 6,416,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512,489.92 : 8,978,976.72 = 4,654,125.04 : x
  2. Step 2: Convert to fraction form
    6,512,489.92/8,978,976.72 = 4,654,125.04/x
  3. Step 3: Cross multiply
    6,512,489.92x = 8,978,976.72 × 4,654,125.04
  4. Step 4: Simplify right side
    6,512,489.92x = 41,789,280,386,129.07
  5. Step 5: Solve for x
    x = 41,789,280,386,129.07/6,512,489.92
  6. Step 6: Final answer
    x = 6,416,790.03

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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.