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Finding the Fourth Proportional to 108,313.80, 162,413.10 and 45,913.80

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Solution

The fourth proportional to 108,313.80, 162,413.10 and 45,913.80 is: 68,846.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,313.80 : 162,413.10 = 45,913.80 : x
  2. Step 2: Convert to fraction form
    108,313.80/162,413.10 = 45,913.80/x
  3. Step 3: Cross multiply
    108,313.80x = 162,413.10 × 45,913.80
  4. Step 4: Simplify right side
    108,313.80x = 7,457,002,590.78
  5. Step 5: Solve for x
    x = 7,457,002,590.78/108,313.80
  6. Step 6: Final answer
    x = 68,846.28

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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.