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Finding the Fourth Proportional to 79,668.21, 109,946.10 and 43,857.84

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Solution

The fourth proportional to 79,668.21, 109,946.10 and 43,857.84 is: 60,526.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,668.21 : 109,946.10 = 43,857.84 : x
  2. Step 2: Convert to fraction form
    79,668.21/109,946.10 = 43,857.84/x
  3. Step 3: Cross multiply
    79,668.21x = 109,946.10 × 43,857.84
  4. Step 4: Simplify right side
    79,668.21x = 4,821,998,462.42
  5. Step 5: Solve for x
    x = 4,821,998,462.42/79,668.21
  6. Step 6: Final answer
    x = 60,526.00

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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.