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Finding the Fourth Proportional to 79,698.57, 109,984.05 and 43,888.47

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Solution

The fourth proportional to 79,698.57, 109,984.05 and 43,888.47 is: 60,566.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,698.57 : 109,984.05 = 43,888.47 : x
  2. Step 2: Convert to fraction form
    79,698.57/109,984.05 = 43,888.47/x
  3. Step 3: Cross multiply
    79,698.57x = 109,984.05 × 43,888.47
  4. Step 4: Simplify right side
    79,698.57x = 4,827,031,678.90
  5. Step 5: Solve for x
    x = 4,827,031,678.90/79,698.57
  6. Step 6: Final answer
    x = 60,566.10

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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.