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Finding the Fourth Proportional to 79,415.79, 109,597.37 and 47,584.01

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Solution

The fourth proportional to 79,415.79, 109,597.37 and 47,584.01 is: 65,668.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,415.79 : 109,597.37 = 47,584.01 : x
  2. Step 2: Convert to fraction form
    79,415.79/109,597.37 = 47,584.01/x
  3. Step 3: Cross multiply
    79,415.79x = 109,597.37 × 47,584.01
  4. Step 4: Simplify right side
    79,415.79x = 5,215,081,564.15
  5. Step 5: Solve for x
    x = 5,215,081,564.15/79,415.79
  6. Step 6: Final answer
    x = 65,668.07

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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.