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Finding the Fourth Proportional to 64,619.65, 89,175.39 and 36,323.53

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Solution

The fourth proportional to 64,619.65, 89,175.39 and 36,323.53 is: 50,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,619.65 : 89,175.39 = 36,323.53 : x
  2. Step 2: Convert to fraction form
    64,619.65/89,175.39 = 36,323.53/x
  3. Step 3: Cross multiply
    64,619.65x = 89,175.39 × 36,323.53
  4. Step 4: Simplify right side
    64,619.65x = 3,239,164,953.93
  5. Step 5: Solve for x
    x = 3,239,164,953.93/64,619.65
  6. Step 6: Final answer
    x = 50,126.62

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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.