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Finding the Fourth Proportional to 328,339.14, 492,508.80 and 79,021.14

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Solution

The fourth proportional to 328,339.14, 492,508.80 and 79,021.14 is: 118,531.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,339.14 : 492,508.80 = 79,021.14 : x
  2. Step 2: Convert to fraction form
    328,339.14/492,508.80 = 79,021.14/x
  3. Step 3: Cross multiply
    328,339.14x = 492,508.80 × 79,021.14
  4. Step 4: Simplify right side
    328,339.14x = 38,918,606,836.03
  5. Step 5: Solve for x
    x = 38,918,606,836.03/328,339.14
  6. Step 6: Final answer
    x = 118,531.73

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1.5x scale

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.