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Finding the Fourth Proportional to 73,285.90, 102,911.30 and 73,285.90

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Solution

The fourth proportional to 73,285.90, 102,911.30 and 73,285.90 is: 102,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,285.90 : 102,911.30 = 73,285.90 : x
  2. Step 2: Convert to fraction form
    73,285.90/102,911.30 = 73,285.90/x
  3. Step 3: Cross multiply
    73,285.90x = 102,911.30 × 73,285.90
  4. Step 4: Simplify right side
    73,285.90x = 7,541,947,240.67
  5. Step 5: Solve for x
    x = 7,541,947,240.67/73,285.90
  6. Step 6: Final answer
    x = 102,911.30

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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.