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Finding the Fourth Proportional to 103,486.92, 155,107.35 and 92,907.30

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Solution

The fourth proportional to 103,486.92, 155,107.35 and 92,907.30 is: 139,250.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,486.92 : 155,107.35 = 92,907.30 : x
  2. Step 2: Convert to fraction form
    103,486.92/155,107.35 = 92,907.30/x
  3. Step 3: Cross multiply
    103,486.92x = 155,107.35 × 92,907.30
  4. Step 4: Simplify right side
    103,486.92x = 14,410,605,098.66
  5. Step 5: Solve for x
    x = 14,410,605,098.66/103,486.92
  6. Step 6: Final answer
    x = 139,250.50

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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.