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Finding the Fourth Proportional to 539,173.60, 809,343.60 and 339,719.20

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Solution

The fourth proportional to 539,173.60, 809,343.60 and 339,719.20 is: 509,946.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,173.60 : 809,343.60 = 339,719.20 : x
  2. Step 2: Convert to fraction form
    539,173.60/809,343.60 = 339,719.20/x
  3. Step 3: Cross multiply
    539,173.60x = 809,343.60 × 339,719.20
  4. Step 4: Simplify right side
    539,173.60x = 274,949,560,317.12
  5. Step 5: Solve for x
    x = 274,949,560,317.12/539,173.60
  6. Step 6: Final answer
    x = 509,946.26

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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.