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Finding the Fourth Proportional to 79,492.86, 109,699.27 and 43,682.45

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Solution

The fourth proportional to 79,492.86, 109,699.27 and 43,682.45 is: 60,281.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,492.86 : 109,699.27 = 43,682.45 : x
  2. Step 2: Convert to fraction form
    79,492.86/109,699.27 = 43,682.45/x
  3. Step 3: Cross multiply
    79,492.86x = 109,699.27 × 43,682.45
  4. Step 4: Simplify right side
    79,492.86x = 4,791,932,219.11
  5. Step 5: Solve for x
    x = 4,791,932,219.11/79,492.86
  6. Step 6: Final answer
    x = 60,281.29

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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.