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Finding the Fourth Proportional to 539,388.60, 809,543.70 and 240,329.40

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Solution

The fourth proportional to 539,388.60, 809,543.70 and 240,329.40 is: 360,699.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,388.60 : 809,543.70 = 240,329.40 : x
  2. Step 2: Convert to fraction form
    539,388.60/809,543.70 = 240,329.40/x
  3. Step 3: Cross multiply
    539,388.60x = 809,543.70 × 240,329.40
  4. Step 4: Simplify right side
    539,388.60x = 194,557,151,694.78
  5. Step 5: Solve for x
    x = 194,557,151,694.78/539,388.60
  6. Step 6: Final answer
    x = 360,699.41

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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.