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Finding the Fourth Proportional to 484,728.80, 727,093.20 and 335,429.60

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Solution

The fourth proportional to 484,728.80, 727,093.20 and 335,429.60 is: 503,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,728.80 : 727,093.20 = 335,429.60 : x
  2. Step 2: Convert to fraction form
    484,728.80/727,093.20 = 335,429.60/x
  3. Step 3: Cross multiply
    484,728.80x = 727,093.20 × 335,429.60
  4. Step 4: Simplify right side
    484,728.80x = 243,888,581,238.72
  5. Step 5: Solve for x
    x = 243,888,581,238.72/484,728.80
  6. Step 6: Final answer
    x = 503,144.40

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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.