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Finding the Fourth Proportional to 402,180.80, 603,271.20 and 297,204.80

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Solution

The fourth proportional to 402,180.80, 603,271.20 and 297,204.80 is: 445,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,180.80 : 603,271.20 = 297,204.80 : x
  2. Step 2: Convert to fraction form
    402,180.80/603,271.20 = 297,204.80/x
  3. Step 3: Cross multiply
    402,180.80x = 603,271.20 × 297,204.80
  4. Step 4: Simplify right side
    402,180.80x = 179,295,096,341.76
  5. Step 5: Solve for x
    x = 179,295,096,341.76/402,180.80
  6. Step 6: Final answer
    x = 445,807.20

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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.