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Finding the Fourth Proportional to 363,776.40, 545,664.60 and 306,039.60

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Solution

The fourth proportional to 363,776.40, 545,664.60 and 306,039.60 is: 459,059.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,776.40 : 545,664.60 = 306,039.60 : x
  2. Step 2: Convert to fraction form
    363,776.40/545,664.60 = 306,039.60/x
  3. Step 3: Cross multiply
    363,776.40x = 545,664.60 × 306,039.60
  4. Step 4: Simplify right side
    363,776.40x = 166,994,975,918.16
  5. Step 5: Solve for x
    x = 166,994,975,918.16/363,776.40
  6. Step 6: Final answer
    x = 459,059.40

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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.