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Finding the Fourth Proportional to 126,708, 174,851.68 and 70,116

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Solution

The fourth proportional to 126,708, 174,851.68 and 70,116 is: 96,757.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,708 : 174,851.68 = 70,116 : x
  2. Step 2: Convert to fraction form
    126,708/174,851.68 = 70,116/x
  3. Step 3: Cross multiply
    126,708x = 174,851.68 × 70,116
  4. Step 4: Simplify right side
    126,708x = 12,259,900,394.88
  5. Step 5: Solve for x
    x = 12,259,900,394.88/126,708
  6. Step 6: Final answer
    x = 96,757.11

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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.