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Finding the Fourth Proportional to 518,609.28, 777,446.40 and 186,107.52

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Solution

The fourth proportional to 518,609.28, 777,446.40 and 186,107.52 is: 278,993.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,609.28 : 777,446.40 = 186,107.52 : x
  2. Step 2: Convert to fraction form
    518,609.28/777,446.40 = 186,107.52/x
  3. Step 3: Cross multiply
    518,609.28x = 777,446.40 × 186,107.52
  4. Step 4: Simplify right side
    518,609.28x = 144,688,621,436.93
  5. Step 5: Solve for x
    x = 144,688,621,436.93/518,609.28
  6. Step 6: Final answer
    x = 278,993.51

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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.