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Finding the Fourth Proportional to 93,636, 129,217.68 and 51,194.84

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Solution

The fourth proportional to 93,636, 129,217.68 and 51,194.84 is: 70,648.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,636 : 129,217.68 = 51,194.84 : x
  2. Step 2: Convert to fraction form
    93,636/129,217.68 = 51,194.84/x
  3. Step 3: Cross multiply
    93,636x = 129,217.68 × 51,194.84
  4. Step 4: Simplify right side
    93,636x = 6,615,277,806.68
  5. Step 5: Solve for x
    x = 6,615,277,806.68/93,636
  6. Step 6: Final answer
    x = 70,648.87

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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.