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Finding the Fourth Proportional to 108,413.60, 162,571.80 and 49,218.80

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Solution

The fourth proportional to 108,413.60, 162,571.80 and 49,218.80 is: 73,806.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,413.60 : 162,571.80 = 49,218.80 : x
  2. Step 2: Convert to fraction form
    108,413.60/162,571.80 = 49,218.80/x
  3. Step 3: Cross multiply
    108,413.60x = 162,571.80 × 49,218.80
  4. Step 4: Simplify right side
    108,413.60x = 8,001,588,909.84
  5. Step 5: Solve for x
    x = 8,001,588,909.84/108,413.60
  6. Step 6: Final answer
    x = 73,806.14

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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.