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Finding the Fourth Proportional to 328,025.52, 492,103.80 and 117,679.68

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Solution

The fourth proportional to 328,025.52, 492,103.80 and 117,679.68 is: 176,543.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,025.52 : 492,103.80 = 117,679.68 : x
  2. Step 2: Convert to fraction form
    328,025.52/492,103.80 = 117,679.68/x
  3. Step 3: Cross multiply
    328,025.52x = 492,103.80 × 117,679.68
  4. Step 4: Simplify right side
    328,025.52x = 57,910,617,710.78
  5. Step 5: Solve for x
    x = 57,910,617,710.78/328,025.52
  6. Step 6: Final answer
    x = 176,543.03

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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.