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Finding the Fourth Proportional to 47,666.48, 65,781.50 and 28,799.96

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Solution

The fourth proportional to 47,666.48, 65,781.50 and 28,799.96 is: 39,745.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,666.48 : 65,781.50 = 28,799.96 : x
  2. Step 2: Convert to fraction form
    47,666.48/65,781.50 = 28,799.96/x
  3. Step 3: Cross multiply
    47,666.48x = 65,781.50 × 28,799.96
  4. Step 4: Simplify right side
    47,666.48x = 1,894,504,568.74
  5. Step 5: Solve for x
    x = 1,894,504,568.74/47,666.48
  6. Step 6: Final answer
    x = 39,745.01

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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.