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Finding the Fourth Proportional to 52,171,940.20, 72,945,056.90 and 52,171,940.20

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Solution

The fourth proportional to 52,171,940.20, 72,945,056.90 and 52,171,940.20 is: 72,945,056.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,171,940.20 : 72,945,056.90 = 52,171,940.20 : x
  2. Step 2: Convert to fraction form
    52,171,940.20/72,945,056.90 = 52,171,940.20/x
  3. Step 3: Cross multiply
    52,171,940.20x = 72,945,056.90 × 52,171,940.20
  4. Step 4: Simplify right side
    52,171,940.20x = 3,805,685,146,472,398
  5. Step 5: Solve for x
    x = 3,805,685,146,472,398/52,171,940.20
  6. Step 6: Final answer
    x = 72,945,056.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.