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Finding the Fourth Proportional to 79,656.99, 109,913.78 and 45,659.22

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Solution

The fourth proportional to 79,656.99, 109,913.78 and 45,659.22 is: 63,002.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,656.99 : 109,913.78 = 45,659.22 : x
  2. Step 2: Convert to fraction form
    79,656.99/109,913.78 = 45,659.22/x
  3. Step 3: Cross multiply
    79,656.99x = 109,913.78 × 45,659.22
  4. Step 4: Simplify right side
    79,656.99x = 5,018,577,576.20
  5. Step 5: Solve for x
    x = 5,018,577,576.20/79,656.99
  6. Step 6: Final answer
    x = 63,002.35

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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.