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Finding the Fourth Proportional to 78,622.72, 117,991.08 and 58,954.24

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Solution

The fourth proportional to 78,622.72, 117,991.08 and 58,954.24 is: 88,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,622.72 : 117,991.08 = 58,954.24 : x
  2. Step 2: Convert to fraction form
    78,622.72/117,991.08 = 58,954.24/x
  3. Step 3: Cross multiply
    78,622.72x = 117,991.08 × 58,954.24
  4. Step 4: Simplify right side
    78,622.72x = 6,956,074,448.18
  5. Step 5: Solve for x
    x = 6,956,074,448.18/78,622.72
  6. Step 6: Final answer
    x = 88,474.10

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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.