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Finding the Fourth Proportional to 109,737.10, 164,605.65 and 65,413.90

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Solution

The fourth proportional to 109,737.10, 164,605.65 and 65,413.90 is: 98,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,737.10 : 164,605.65 = 65,413.90 : x
  2. Step 2: Convert to fraction form
    109,737.10/164,605.65 = 65,413.90/x
  3. Step 3: Cross multiply
    109,737.10x = 164,605.65 × 65,413.90
  4. Step 4: Simplify right side
    109,737.10x = 10,767,497,528.54
  5. Step 5: Solve for x
    x = 10,767,497,528.54/109,737.10
  6. Step 6: Final answer
    x = 98,120.85

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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.