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Finding the Fourth Proportional to 431,683.40, 647,525.10 and 332,035.40

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Solution

The fourth proportional to 431,683.40, 647,525.10 and 332,035.40 is: 498,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,683.40 : 647,525.10 = 332,035.40 : x
  2. Step 2: Convert to fraction form
    431,683.40/647,525.10 = 332,035.40/x
  3. Step 3: Cross multiply
    431,683.40x = 647,525.10 × 332,035.40
  4. Step 4: Simplify right side
    431,683.40x = 215,001,255,588.54
  5. Step 5: Solve for x
    x = 215,001,255,588.54/431,683.40
  6. Step 6: Final answer
    x = 498,053.10

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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.