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Finding the Fourth Proportional to 64,429.77, 88,912.89 and 36,136.08

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Solution

The fourth proportional to 64,429.77, 88,912.89 and 36,136.08 is: 49,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,429.77 : 88,912.89 = 36,136.08 : x
  2. Step 2: Convert to fraction form
    64,429.77/88,912.89 = 36,136.08/x
  3. Step 3: Cross multiply
    64,429.77x = 88,912.89 × 36,136.08
  4. Step 4: Simplify right side
    64,429.77x = 3,212,963,306.07
  5. Step 5: Solve for x
    x = 3,212,963,306.07/64,429.77
  6. Step 6: Final answer
    x = 49,867.68

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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.