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Finding the Fourth Proportional to 7,061,712.80, 10,589,944.80 and 2,800,999.40

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Solution

The fourth proportional to 7,061,712.80, 10,589,944.80 and 2,800,999.40 is: 4,200,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,061,712.80 : 10,589,944.80 = 2,800,999.40 : x
  2. Step 2: Convert to fraction form
    7,061,712.80/10,589,944.80 = 2,800,999.40/x
  3. Step 3: Cross multiply
    7,061,712.80x = 10,589,944.80 × 2,800,999.40
  4. Step 4: Simplify right side
    7,061,712.80x = 29,662,429,030,833.12
  5. Step 5: Solve for x
    x = 29,662,429,030,833.12/7,061,712.80
  6. Step 6: Final answer
    x = 4,200,458.14

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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.