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Finding the Fourth Proportional to 8,512,092.80, 12,765,892.80 and 4,249,116.80

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Solution

The fourth proportional to 8,512,092.80, 12,765,892.80 and 4,249,116.80 is: 6,372,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512,092.80 : 12,765,892.80 = 4,249,116.80 : x
  2. Step 2: Convert to fraction form
    8,512,092.80/12,765,892.80 = 4,249,116.80/x
  3. Step 3: Cross multiply
    8,512,092.80x = 12,765,892.80 × 4,249,116.80
  4. Step 4: Simplify right side
    8,512,092.80x = 54,243,769,563,479.04
  5. Step 5: Solve for x
    x = 54,243,769,563,479.04/8,512,092.80
  6. Step 6: Final answer
    x = 6,372,553.83

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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.