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Finding the Fourth Proportional to 539,428.80, 809,143.20 and 184,411.20

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Solution

The fourth proportional to 539,428.80, 809,143.20 and 184,411.20 is: 276,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,428.80 : 809,143.20 = 184,411.20 : x
  2. Step 2: Convert to fraction form
    539,428.80/809,143.20 = 184,411.20/x
  3. Step 3: Cross multiply
    539,428.80x = 809,143.20 × 184,411.20
  4. Step 4: Simplify right side
    539,428.80x = 149,215,068,483.84
  5. Step 5: Solve for x
    x = 149,215,068,483.84/539,428.80
  6. Step 6: Final answer
    x = 276,616.80

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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.