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Finding the Fourth Proportional to 118,656, 163,763.60 and 67,668.84

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Solution

The fourth proportional to 118,656, 163,763.60 and 67,668.84 is: 93,393.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,656 : 163,763.60 = 67,668.84 : x
  2. Step 2: Convert to fraction form
    118,656/163,763.60 = 67,668.84/x
  3. Step 3: Cross multiply
    118,656x = 163,763.60 × 67,668.84
  4. Step 4: Simplify right side
    118,656x = 11,081,692,846.22
  5. Step 5: Solve for x
    x = 11,081,692,846.22/118,656
  6. Step 6: Final answer
    x = 93,393.45

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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.