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Finding the Fourth Proportional to 543,000.20, 813,698.40 and 393,555.20

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Solution

The fourth proportional to 543,000.20, 813,698.40 and 393,555.20 is: 589,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,000.20 : 813,698.40 = 393,555.20 : x
  2. Step 2: Convert to fraction form
    543,000.20/813,698.40 = 393,555.20/x
  3. Step 3: Cross multiply
    543,000.20x = 813,698.40 × 393,555.20
  4. Step 4: Simplify right side
    543,000.20x = 320,235,236,551.68
  5. Step 5: Solve for x
    x = 320,235,236,551.68/543,000.20
  6. Step 6: Final answer
    x = 589,751.60

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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.