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Finding the Fourth Proportional to 154,446.60, 231,669.90 and 144,078.60

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Solution

The fourth proportional to 154,446.60, 231,669.90 and 144,078.60 is: 216,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,446.60 : 231,669.90 = 144,078.60 : x
  2. Step 2: Convert to fraction form
    154,446.60/231,669.90 = 144,078.60/x
  3. Step 3: Cross multiply
    154,446.60x = 231,669.90 × 144,078.60
  4. Step 4: Simplify right side
    154,446.60x = 33,378,674,854.14
  5. Step 5: Solve for x
    x = 33,378,674,854.14/154,446.60
  6. Step 6: Final answer
    x = 216,117.90

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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.