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Finding the Fourth Proportional to 539,651.60, 809,477.40 and 274,230.80

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Solution

The fourth proportional to 539,651.60, 809,477.40 and 274,230.80 is: 411,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,651.60 : 809,477.40 = 274,230.80 : x
  2. Step 2: Convert to fraction form
    539,651.60/809,477.40 = 274,230.80/x
  3. Step 3: Cross multiply
    539,651.60x = 809,477.40 × 274,230.80
  4. Step 4: Simplify right side
    539,651.60x = 221,983,634,983.92
  5. Step 5: Solve for x
    x = 221,983,634,983.92/539,651.60
  6. Step 6: Final answer
    x = 411,346.20

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Double scale
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Similar ratio
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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.