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Finding the Fourth Proportional to 64,976.61, 89,667.70 and 35,168.61

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Solution

The fourth proportional to 64,976.61, 89,667.70 and 35,168.61 is: 48,532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.61 : 89,667.70 = 35,168.61 : x
  2. Step 2: Convert to fraction form
    64,976.61/89,667.70 = 35,168.61/x
  3. Step 3: Cross multiply
    64,976.61x = 89,667.70 × 35,168.61
  4. Step 4: Simplify right side
    64,976.61x = 3,153,488,370.90
  5. Step 5: Solve for x
    x = 3,153,488,370.90/64,976.61
  6. Step 6: Final answer
    x = 48,532.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.