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Finding the Fourth Proportional to 539,178.60, 809,351.10 and 339,724.20

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Solution

The fourth proportional to 539,178.60, 809,351.10 and 339,724.20 is: 509,953.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,178.60 : 809,351.10 = 339,724.20 : x
  2. Step 2: Convert to fraction form
    539,178.60/809,351.10 = 339,724.20/x
  3. Step 3: Cross multiply
    539,178.60x = 809,351.10 × 339,724.20
  4. Step 4: Simplify right side
    539,178.60x = 274,956,154,966.62
  5. Step 5: Solve for x
    x = 274,956,154,966.62/539,178.60
  6. Step 6: Final answer
    x = 509,953.76

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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.