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Finding the Fourth Proportional to 88,413.80, 132,426.30 and 76,749.80

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Solution

The fourth proportional to 88,413.80, 132,426.30 and 76,749.80 is: 114,955.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,413.80 : 132,426.30 = 76,749.80 : x
  2. Step 2: Convert to fraction form
    88,413.80/132,426.30 = 76,749.80/x
  3. Step 3: Cross multiply
    88,413.80x = 132,426.30 × 76,749.80
  4. Step 4: Simplify right side
    88,413.80x = 10,163,692,039.74
  5. Step 5: Solve for x
    x = 10,163,692,039.74/88,413.80
  6. Step 6: Final answer
    x = 114,955.95

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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.