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Finding the Fourth Proportional to 539,237.80, 809,512.80 and 272,861.20

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Solution

The fourth proportional to 539,237.80, 809,512.80 and 272,861.20 is: 409,623.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,237.80 : 809,512.80 = 272,861.20 : x
  2. Step 2: Convert to fraction form
    539,237.80/809,512.80 = 272,861.20/x
  3. Step 3: Cross multiply
    539,237.80x = 809,512.80 × 272,861.20
  4. Step 4: Simplify right side
    539,237.80x = 220,884,634,023.36
  5. Step 5: Solve for x
    x = 220,884,634,023.36/539,237.80
  6. Step 6: Final answer
    x = 409,623.79

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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.