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Finding the Fourth Proportional to 78,595.18, 117,893.99 and 43,756.27

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Solution

The fourth proportional to 78,595.18, 117,893.99 and 43,756.27 is: 65,635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,595.18 : 117,893.99 = 43,756.27 : x
  2. Step 2: Convert to fraction form
    78,595.18/117,893.99 = 43,756.27/x
  3. Step 3: Cross multiply
    78,595.18x = 117,893.99 × 43,756.27
  4. Step 4: Simplify right side
    78,595.18x = 5,158,601,257.82
  5. Step 5: Solve for x
    x = 5,158,601,257.82/78,595.18
  6. Step 6: Final answer
    x = 65,635.08

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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.