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Finding the Fourth Proportional to 73,779.85, 110,503.27 and 51,691.81

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Solution

The fourth proportional to 73,779.85, 110,503.27 and 51,691.81 is: 77,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,779.85 : 110,503.27 = 51,691.81 : x
  2. Step 2: Convert to fraction form
    73,779.85/110,503.27 = 51,691.81/x
  3. Step 3: Cross multiply
    73,779.85x = 110,503.27 × 51,691.81
  4. Step 4: Simplify right side
    73,779.85x = 5,712,114,037.22
  5. Step 5: Solve for x
    x = 5,712,114,037.22/73,779.85
  6. Step 6: Final answer
    x = 77,421.06

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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.