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Finding the Fourth Proportional to 139,849.96, 209,697.18 and 46,304.68

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Solution

The fourth proportional to 139,849.96, 209,697.18 and 46,304.68 is: 69,431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,849.96 : 209,697.18 = 46,304.68 : x
  2. Step 2: Convert to fraction form
    139,849.96/209,697.18 = 46,304.68/x
  3. Step 3: Cross multiply
    139,849.96x = 209,697.18 × 46,304.68
  4. Step 4: Simplify right side
    139,849.96x = 9,709,960,816.80
  5. Step 5: Solve for x
    x = 9,709,960,816.80/139,849.96
  6. Step 6: Final answer
    x = 69,431.27

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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.