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Finding the Fourth Proportional to 64,338.68, 88,782.54 and 36,039.80

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Solution

The fourth proportional to 64,338.68, 88,782.54 and 36,039.80 is: 49,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,338.68 : 88,782.54 = 36,039.80 : x
  2. Step 2: Convert to fraction form
    64,338.68/88,782.54 = 36,039.80/x
  3. Step 3: Cross multiply
    64,338.68x = 88,782.54 × 36,039.80
  4. Step 4: Simplify right side
    64,338.68x = 3,199,704,985.09
  5. Step 5: Solve for x
    x = 3,199,704,985.09/64,338.68
  6. Step 6: Final answer
    x = 49,732.21

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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.