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Finding the Fourth Proportional to 73,405.90, 102,906.50 and 73,405.90

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Solution

The fourth proportional to 73,405.90, 102,906.50 and 73,405.90 is: 102,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,405.90 : 102,906.50 = 73,405.90 : x
  2. Step 2: Convert to fraction form
    73,405.90/102,906.50 = 73,405.90/x
  3. Step 3: Cross multiply
    73,405.90x = 102,906.50 × 73,405.90
  4. Step 4: Simplify right side
    73,405.90x = 7,553,944,248.35
  5. Step 5: Solve for x
    x = 7,553,944,248.35/73,405.90
  6. Step 6: Final answer
    x = 102,906.50

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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.