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Finding the Fourth Proportional to 79,176.72, 109,263.92 and 43,366.72

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Solution

The fourth proportional to 79,176.72, 109,263.92 and 43,366.72 is: 59,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,176.72 : 109,263.92 = 43,366.72 : x
  2. Step 2: Convert to fraction form
    79,176.72/109,263.92 = 43,366.72/x
  3. Step 3: Cross multiply
    79,176.72x = 109,263.92 × 43,366.72
  4. Step 4: Simplify right side
    79,176.72x = 4,738,417,824.74
  5. Step 5: Solve for x
    x = 4,738,417,824.74/79,176.72
  6. Step 6: Final answer
    x = 59,846.10

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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.