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Finding the Fourth Proportional to 52,620.33, 78,928.12 and 19,337.99

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Solution

The fourth proportional to 52,620.33, 78,928.12 and 19,337.99 is: 29,006.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,620.33 : 78,928.12 = 19,337.99 : x
  2. Step 2: Convert to fraction form
    52,620.33/78,928.12 = 19,337.99/x
  3. Step 3: Cross multiply
    52,620.33x = 78,928.12 × 19,337.99
  4. Step 4: Simplify right side
    52,620.33x = 1,526,311,268.78
  5. Step 5: Solve for x
    x = 1,526,311,268.78/52,620.33
  6. Step 6: Final answer
    x = 29,006.11

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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.