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Finding the Fourth Proportional to 78,506.56, 117,757.14 and 22,347.01

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Solution

The fourth proportional to 78,506.56, 117,757.14 and 22,347.01 is: 33,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,506.56 : 117,757.14 = 22,347.01 : x
  2. Step 2: Convert to fraction form
    78,506.56/117,757.14 = 22,347.01/x
  3. Step 3: Cross multiply
    78,506.56x = 117,757.14 × 22,347.01
  4. Step 4: Simplify right side
    78,506.56x = 2,631,519,985.15
  5. Step 5: Solve for x
    x = 2,631,519,985.15/78,506.56
  6. Step 6: Final answer
    x = 33,519.75

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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.