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Finding the Fourth Proportional to 79,473.71, 109,674.47 and 43,664.47

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Solution

The fourth proportional to 79,473.71, 109,674.47 and 43,664.47 is: 60,257.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,473.71 : 109,674.47 = 43,664.47 : x
  2. Step 2: Convert to fraction form
    79,473.71/109,674.47 = 43,664.47/x
  3. Step 3: Cross multiply
    79,473.71x = 109,674.47 × 43,664.47
  4. Step 4: Simplify right side
    79,473.71x = 4,788,877,605.08
  5. Step 5: Solve for x
    x = 4,788,877,605.08/79,473.71
  6. Step 6: Final answer
    x = 60,257.38

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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.