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Finding the Fourth Proportional to 47,691.99, 65,807.64 and 28,567.28

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Solution

The fourth proportional to 47,691.99, 65,807.64 and 28,567.28 is: 39,418.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,691.99 : 65,807.64 = 28,567.28 : x
  2. Step 2: Convert to fraction form
    47,691.99/65,807.64 = 28,567.28/x
  3. Step 3: Cross multiply
    47,691.99x = 65,807.64 × 28,567.28
  4. Step 4: Simplify right side
    47,691.99x = 1,879,945,442.54
  5. Step 5: Solve for x
    x = 1,879,945,442.54/47,691.99
  6. Step 6: Final answer
    x = 39,418.47

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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.