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Finding the Fourth Proportional to 367,913.60, 550,558.20 and 255,064.40

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Solution

The fourth proportional to 367,913.60, 550,558.20 and 255,064.40 is: 381,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,913.60 : 550,558.20 = 255,064.40 : x
  2. Step 2: Convert to fraction form
    367,913.60/550,558.20 = 255,064.40/x
  3. Step 3: Cross multiply
    367,913.60x = 550,558.20 × 255,064.40
  4. Step 4: Simplify right side
    367,913.60x = 140,427,796,948.08
  5. Step 5: Solve for x
    x = 140,427,796,948.08/367,913.60
  6. Step 6: Final answer
    x = 381,686.89

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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.