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Finding the Fourth Proportional to 6,443,402.94, 8,891,656.92 and 3,542,621.22

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Solution

The fourth proportional to 6,443,402.94, 8,891,656.92 and 3,542,621.22 is: 4,888,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443,402.94 : 8,891,656.92 = 3,542,621.22 : x
  2. Step 2: Convert to fraction form
    6,443,402.94/8,891,656.92 = 3,542,621.22/x
  3. Step 3: Cross multiply
    6,443,402.94x = 8,891,656.92 × 3,542,621.22
  4. Step 4: Simplify right side
    6,443,402.94x = 31,499,772,485,751.84
  5. Step 5: Solve for x
    x = 31,499,772,485,751.84/6,443,402.94
  6. Step 6: Final answer
    x = 4,888,685.80

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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.