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Finding the Fourth Proportional to 322,448.92, 483,665.10 and 85,793.60

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Solution

The fourth proportional to 322,448.92, 483,665.10 and 85,793.60 is: 128,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,448.92 : 483,665.10 = 85,793.60 : x
  2. Step 2: Convert to fraction form
    322,448.92/483,665.10 = 85,793.60/x
  3. Step 3: Cross multiply
    322,448.92x = 483,665.10 × 85,793.60
  4. Step 4: Simplify right side
    322,448.92x = 41,495,370,123.36
  5. Step 5: Solve for x
    x = 41,495,370,123.36/322,448.92
  6. Step 6: Final answer
    x = 128,688.20

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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.