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Finding the Fourth Proportional to 34,039.68, 51,060.88 and 11,855.30

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Solution

The fourth proportional to 34,039.68, 51,060.88 and 11,855.30 is: 17,783.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,039.68 : 51,060.88 = 11,855.30 : x
  2. Step 2: Convert to fraction form
    34,039.68/51,060.88 = 11,855.30/x
  3. Step 3: Cross multiply
    34,039.68x = 51,060.88 × 11,855.30
  4. Step 4: Simplify right side
    34,039.68x = 605,341,810.18
  5. Step 5: Solve for x
    x = 605,341,810.18/34,039.68
  6. Step 6: Final answer
    x = 17,783.42

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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.