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Finding the Fourth Proportional to 68,493.72, 102,763.92 and 36,907.02

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Solution

The fourth proportional to 68,493.72, 102,763.92 and 36,907.02 is: 55,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,493.72 : 102,763.92 = 36,907.02 : x
  2. Step 2: Convert to fraction form
    68,493.72/102,763.92 = 36,907.02/x
  3. Step 3: Cross multiply
    68,493.72x = 102,763.92 × 36,907.02
  4. Step 4: Simplify right side
    68,493.72x = 3,792,710,050.72
  5. Step 5: Solve for x
    x = 3,792,710,050.72/68,493.72
  6. Step 6: Final answer
    x = 55,373.11

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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.