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Finding the Fourth Proportional to 618,819.16, 928,293.54 and 263,870.68

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Solution

The fourth proportional to 618,819.16, 928,293.54 and 263,870.68 is: 395,833.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,819.16 : 928,293.54 = 263,870.68 : x
  2. Step 2: Convert to fraction form
    618,819.16/928,293.54 = 263,870.68/x
  3. Step 3: Cross multiply
    618,819.16x = 928,293.54 × 263,870.68
  4. Step 4: Simplify right side
    618,819.16x = 244,949,447,639.41
  5. Step 5: Solve for x
    x = 244,949,447,639.41/618,819.16
  6. Step 6: Final answer
    x = 395,833.65

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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.