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Finding the Fourth Proportional to 6,512,485.92, 8,978,971.20 and 4,654,121.04

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Solution

The fourth proportional to 6,512,485.92, 8,978,971.20 and 4,654,121.04 is: 6,416,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512,485.92 : 8,978,971.20 = 4,654,121.04 : x
  2. Step 2: Convert to fraction form
    6,512,485.92/8,978,971.20 = 4,654,121.04/x
  3. Step 3: Cross multiply
    6,512,485.92x = 8,978,971.20 × 4,654,121.04
  4. Step 4: Simplify right side
    6,512,485.92x = 41,789,218,779,474.05
  5. Step 5: Solve for x
    x = 41,789,218,779,474.05/6,512,485.92
  6. Step 6: Final answer
    x = 6,416,784.51

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1.5x scale

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.