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Finding the Fourth Proportional to 8,414,235.65, 12,621,820.65 and 2,657,105.78

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Solution

The fourth proportional to 8,414,235.65, 12,621,820.65 and 2,657,105.78 is: 3,985,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,414,235.65 : 12,621,820.65 = 2,657,105.78 : x
  2. Step 2: Convert to fraction form
    8,414,235.65/12,621,820.65 = 2,657,105.78/x
  3. Step 3: Cross multiply
    8,414,235.65x = 12,621,820.65 × 2,657,105.78
  4. Step 4: Simplify right side
    8,414,235.65x = 33,537,512,530,165.11
  5. Step 5: Solve for x
    x = 33,537,512,530,165.11/8,414,235.65
  6. Step 6: Final answer
    x = 3,985,806.19

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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.