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Finding the Fourth Proportional to 307,815.20, 461,722.80 and 295,373.60

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Solution

The fourth proportional to 307,815.20, 461,722.80 and 295,373.60 is: 443,060.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,815.20 : 461,722.80 = 295,373.60 : x
  2. Step 2: Convert to fraction form
    307,815.20/461,722.80 = 295,373.60/x
  3. Step 3: Cross multiply
    307,815.20x = 461,722.80 × 295,373.60
  4. Step 4: Simplify right side
    307,815.20x = 136,380,725,638.08
  5. Step 5: Solve for x
    x = 136,380,725,638.08/307,815.20
  6. Step 6: Final answer
    x = 443,060.40

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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.