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Finding the Fourth Proportional to 73,898.78, 110,854.26 and 31,779.86

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Solution

The fourth proportional to 73,898.78, 110,854.26 and 31,779.86 is: 47,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,898.78 : 110,854.26 = 31,779.86 : x
  2. Step 2: Convert to fraction form
    73,898.78/110,854.26 = 31,779.86/x
  3. Step 3: Cross multiply
    73,898.78x = 110,854.26 × 31,779.86
  4. Step 4: Simplify right side
    73,898.78x = 3,522,932,308.93
  5. Step 5: Solve for x
    x = 3,522,932,308.93/73,898.78
  6. Step 6: Final answer
    x = 47,672.40

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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.