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Finding the Fourth Proportional to 64,429.71, 88,912.73 and 36,135.41

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Solution

The fourth proportional to 64,429.71, 88,912.73 and 36,135.41 is: 49,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,429.71 : 88,912.73 = 36,135.41 : x
  2. Step 2: Convert to fraction form
    64,429.71/88,912.73 = 36,135.41/x
  3. Step 3: Cross multiply
    64,429.71x = 88,912.73 × 36,135.41
  4. Step 4: Simplify right side
    64,429.71x = 3,212,897,327.53
  5. Step 5: Solve for x
    x = 3,212,897,327.53/64,429.71
  6. Step 6: Final answer
    x = 49,866.70

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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.