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Finding the Fourth Proportional to 64,670.64, 89,246.07 and 35,991.51

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Solution

The fourth proportional to 64,670.64, 89,246.07 and 35,991.51 is: 49,668.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,670.64 : 89,246.07 = 35,991.51 : x
  2. Step 2: Convert to fraction form
    64,670.64/89,246.07 = 35,991.51/x
  3. Step 3: Cross multiply
    64,670.64x = 89,246.07 × 35,991.51
  4. Step 4: Simplify right side
    64,670.64x = 3,212,100,820.87
  5. Step 5: Solve for x
    x = 3,212,100,820.87/64,670.64
  6. Step 6: Final answer
    x = 49,668.61

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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.