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Finding the Fourth Proportional to 570,913.72, 856,102.39 and 331,095.78

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Solution

The fourth proportional to 570,913.72, 856,102.39 and 331,095.78 is: 496,488.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,913.72 : 856,102.39 = 331,095.78 : x
  2. Step 2: Convert to fraction form
    570,913.72/856,102.39 = 331,095.78/x
  3. Step 3: Cross multiply
    570,913.72x = 856,102.39 × 331,095.78
  4. Step 4: Simplify right side
    570,913.72x = 283,451,887,749.18
  5. Step 5: Solve for x
    x = 283,451,887,749.18/570,913.72
  6. Step 6: Final answer
    x = 496,488.14

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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.