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Finding the Fourth Proportional to 445,568.80, 668,353.20 and 235,616.80

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Solution

The fourth proportional to 445,568.80, 668,353.20 and 235,616.80 is: 353,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,568.80 : 668,353.20 = 235,616.80 : x
  2. Step 2: Convert to fraction form
    445,568.80/668,353.20 = 235,616.80/x
  3. Step 3: Cross multiply
    445,568.80x = 668,353.20 × 235,616.80
  4. Step 4: Simplify right side
    445,568.80x = 157,475,242,253.76
  5. Step 5: Solve for x
    x = 157,475,242,253.76/445,568.80
  6. Step 6: Final answer
    x = 353,425.20

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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.