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Finding the Fourth Proportional to 539,836.40, 809,754.60 and 455,855.60

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Solution

The fourth proportional to 539,836.40, 809,754.60 and 455,855.60 is: 683,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,836.40 : 809,754.60 = 455,855.60 : x
  2. Step 2: Convert to fraction form
    539,836.40/809,754.60 = 455,855.60/x
  3. Step 3: Cross multiply
    539,836.40x = 809,754.60 × 455,855.60
  4. Step 4: Simplify right side
    539,836.40x = 369,131,169,035.76
  5. Step 5: Solve for x
    x = 369,131,169,035.76/539,836.40
  6. Step 6: Final answer
    x = 683,783.40

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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.