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Finding the Fourth Proportional to 79,653.51, 119,434.23 and 47,664.45

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Solution

The fourth proportional to 79,653.51, 119,434.23 and 47,664.45 is: 71,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653.51 : 119,434.23 = 47,664.45 : x
  2. Step 2: Convert to fraction form
    79,653.51/119,434.23 = 47,664.45/x
  3. Step 3: Cross multiply
    79,653.51x = 119,434.23 × 47,664.45
  4. Step 4: Simplify right side
    79,653.51x = 5,692,766,884.12
  5. Step 5: Solve for x
    x = 5,692,766,884.12/79,653.51
  6. Step 6: Final answer
    x = 71,469.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.