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Finding the Fourth Proportional to 79,484.54, 109,688.64 and 43,674.50

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Solution

The fourth proportional to 79,484.54, 109,688.64 and 43,674.50 is: 60,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,484.54 : 109,688.64 = 43,674.50 : x
  2. Step 2: Convert to fraction form
    79,484.54/109,688.64 = 43,674.50/x
  3. Step 3: Cross multiply
    79,484.54x = 109,688.64 × 43,674.50
  4. Step 4: Simplify right side
    79,484.54x = 4,790,596,507.68
  5. Step 5: Solve for x
    x = 4,790,596,507.68/79,484.54
  6. Step 6: Final answer
    x = 60,270.80

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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.