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Finding the Fourth Proportional to 3,908,655.60, 5,862,983.40 and 3,236,809.20

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Solution

The fourth proportional to 3,908,655.60, 5,862,983.40 and 3,236,809.20 is: 4,855,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908,655.60 : 5,862,983.40 = 3,236,809.20 : x
  2. Step 2: Convert to fraction form
    3,908,655.60/5,862,983.40 = 3,236,809.20/x
  3. Step 3: Cross multiply
    3,908,655.60x = 5,862,983.40 × 3,236,809.20
  4. Step 4: Simplify right side
    3,908,655.60x = 18,977,358,608,567.28
  5. Step 5: Solve for x
    x = 18,977,358,608,567.28/3,908,655.60
  6. Step 6: Final answer
    x = 4,855,213.80

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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.