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Finding the Fourth Proportional to 211,329.52, 316,995.54 and 53,558.44

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Solution

The fourth proportional to 211,329.52, 316,995.54 and 53,558.44 is: 80,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,329.52 : 316,995.54 = 53,558.44 : x
  2. Step 2: Convert to fraction form
    211,329.52/316,995.54 = 53,558.44/x
  3. Step 3: Cross multiply
    211,329.52x = 316,995.54 × 53,558.44
  4. Step 4: Simplify right side
    211,329.52x = 16,977,786,609.36
  5. Step 5: Solve for x
    x = 16,977,786,609.36/211,329.52
  6. Step 6: Final answer
    x = 80,337.98

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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.