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Finding the Fourth Proportional to 79,294.60, 109,431.56 and 52,389.96

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Solution

The fourth proportional to 79,294.60, 109,431.56 and 52,389.96 is: 72,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,294.60 : 109,431.56 = 52,389.96 : x
  2. Step 2: Convert to fraction form
    79,294.60/109,431.56 = 52,389.96/x
  3. Step 3: Cross multiply
    79,294.60x = 109,431.56 × 52,389.96
  4. Step 4: Simplify right side
    79,294.60x = 5,733,115,051.14
  5. Step 5: Solve for x
    x = 5,733,115,051.14/79,294.60
  6. Step 6: Final answer
    x = 72,301.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.