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Finding the Fourth Proportional to 47,328.79, 70,992.94 and 11,789.94

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Solution

The fourth proportional to 47,328.79, 70,992.94 and 11,789.94 is: 17,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,328.79 : 70,992.94 = 11,789.94 : x
  2. Step 2: Convert to fraction form
    47,328.79/70,992.94 = 11,789.94/x
  3. Step 3: Cross multiply
    47,328.79x = 70,992.94 × 11,789.94
  4. Step 4: Simplify right side
    47,328.79x = 837,002,503.02
  5. Step 5: Solve for x
    x = 837,002,503.02/47,328.79
  6. Step 6: Final answer
    x = 17,684.85

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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.