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Finding the Fourth Proportional to 99,145.76, 148,699.53 and 28,067.85

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Solution

The fourth proportional to 99,145.76, 148,699.53 and 28,067.85 is: 42,096.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,145.76 : 148,699.53 = 28,067.85 : x
  2. Step 2: Convert to fraction form
    99,145.76/148,699.53 = 28,067.85/x
  3. Step 3: Cross multiply
    99,145.76x = 148,699.53 × 28,067.85
  4. Step 4: Simplify right side
    99,145.76x = 4,173,676,103.11
  5. Step 5: Solve for x
    x = 4,173,676,103.11/99,145.76
  6. Step 6: Final answer
    x = 42,096.37

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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.