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Finding the Fourth Proportional to 423,862.40, 635,793.60 and 355,433.60

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Solution

The fourth proportional to 423,862.40, 635,793.60 and 355,433.60 is: 533,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,862.40 : 635,793.60 = 355,433.60 : x
  2. Step 2: Convert to fraction form
    423,862.40/635,793.60 = 355,433.60/x
  3. Step 3: Cross multiply
    423,862.40x = 635,793.60 × 355,433.60
  4. Step 4: Simplify right side
    423,862.40x = 225,982,408,104.96
  5. Step 5: Solve for x
    x = 225,982,408,104.96/423,862.40
  6. Step 6: Final answer
    x = 533,150.40

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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.