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Finding the Fourth Proportional to 88,947.90, 133,097.85 and 65,619.90

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Solution

The fourth proportional to 88,947.90, 133,097.85 and 65,619.90 is: 98,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,947.90 : 133,097.85 = 65,619.90 : x
  2. Step 2: Convert to fraction form
    88,947.90/133,097.85 = 65,619.90/x
  3. Step 3: Cross multiply
    88,947.90x = 133,097.85 × 65,619.90
  4. Step 4: Simplify right side
    88,947.90x = 8,733,867,607.22
  5. Step 5: Solve for x
    x = 8,733,867,607.22/88,947.90
  6. Step 6: Final answer
    x = 98,190.82

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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.