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Finding the Fourth Proportional to 411,624.20, 618,069.90 and 225,000.20

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Solution

The fourth proportional to 411,624.20, 618,069.90 and 225,000.20 is: 337,846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,624.20 : 618,069.90 = 225,000.20 : x
  2. Step 2: Convert to fraction form
    411,624.20/618,069.90 = 225,000.20/x
  3. Step 3: Cross multiply
    411,624.20x = 618,069.90 × 225,000.20
  4. Step 4: Simplify right side
    411,624.20x = 139,065,851,113.98
  5. Step 5: Solve for x
    x = 139,065,851,113.98/411,624.20
  6. Step 6: Final answer
    x = 337,846.64

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1.5x scale

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.