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Finding the Fourth Proportional to 47,805.57, 71,402.54 and 43,295.90

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Solution

The fourth proportional to 47,805.57, 71,402.54 and 43,295.90 is: 64,666.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,805.57 : 71,402.54 = 43,295.90 : x
  2. Step 2: Convert to fraction form
    47,805.57/71,402.54 = 43,295.90/x
  3. Step 3: Cross multiply
    47,805.57x = 71,402.54 × 43,295.90
  4. Step 4: Simplify right side
    47,805.57x = 3,091,436,658.09
  5. Step 5: Solve for x
    x = 3,091,436,658.09/47,805.57
  6. Step 6: Final answer
    x = 64,666.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.