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Finding the Fourth Proportional to 64,667.76, 89,240.86 and 35,986.93

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Solution

The fourth proportional to 64,667.76, 89,240.86 and 35,986.93 is: 49,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,667.76 : 89,240.86 = 35,986.93 : x
  2. Step 2: Convert to fraction form
    64,667.76/89,240.86 = 35,986.93/x
  3. Step 3: Cross multiply
    64,667.76x = 89,240.86 × 35,986.93
  4. Step 4: Simplify right side
    64,667.76x = 3,211,504,671.93
  5. Step 5: Solve for x
    x = 3,211,504,671.93/64,667.76
  6. Step 6: Final answer
    x = 49,661.60

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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.