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Finding the Fourth Proportional to 79,242.84, 109,389.96 and 55,462.86

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Solution

The fourth proportional to 79,242.84, 109,389.96 and 55,462.86 is: 76,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,242.84 : 109,389.96 = 55,462.86 : x
  2. Step 2: Convert to fraction form
    79,242.84/109,389.96 = 55,462.86/x
  3. Step 3: Cross multiply
    79,242.84x = 109,389.96 × 55,462.86
  4. Step 4: Simplify right side
    79,242.84x = 6,067,080,036.89
  5. Step 5: Solve for x
    x = 6,067,080,036.89/79,242.84
  6. Step 6: Final answer
    x = 76,563.13

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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.