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Finding the Fourth Proportional to 18,593,140.80, 27,889,711.20 and 18,593,140.80

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Solution

The fourth proportional to 18,593,140.80, 27,889,711.20 and 18,593,140.80 is: 27,889,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593,140.80 : 27,889,711.20 = 18,593,140.80 : x
  2. Step 2: Convert to fraction form
    18,593,140.80/27,889,711.20 = 18,593,140.80/x
  3. Step 3: Cross multiply
    18,593,140.80x = 27,889,711.20 × 18,593,140.80
  4. Step 4: Simplify right side
    18,593,140.80x = 518,557,327,212,936.94
  5. Step 5: Solve for x
    x = 518,557,327,212,936.94/18,593,140.80
  6. Step 6: Final answer
    x = 27,889,711.20

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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.