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Finding the Fourth Proportional to 113,491.06, 170,015.11 and 88,413.68

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Solution

The fourth proportional to 113,491.06, 170,015.11 and 88,413.68 is: 132,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,491.06 : 170,015.11 = 88,413.68 : x
  2. Step 2: Convert to fraction form
    113,491.06/170,015.11 = 88,413.68/x
  3. Step 3: Cross multiply
    113,491.06x = 170,015.11 × 88,413.68
  4. Step 4: Simplify right side
    113,491.06x = 15,031,661,530.70
  5. Step 5: Solve for x
    x = 15,031,661,530.70/113,491.06
  6. Step 6: Final answer
    x = 132,447.98

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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.