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Finding the Fourth Proportional to 126,648, 174,759.12 and 70,051.68

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Solution

The fourth proportional to 126,648, 174,759.12 and 70,051.68 is: 96,662.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,648 : 174,759.12 = 70,051.68 : x
  2. Step 2: Convert to fraction form
    126,648/174,759.12 = 70,051.68/x
  3. Step 3: Cross multiply
    126,648x = 174,759.12 × 70,051.68
  4. Step 4: Simplify right side
    126,648x = 12,242,169,951.32
  5. Step 5: Solve for x
    x = 12,242,169,951.32/126,648
  6. Step 6: Final answer
    x = 96,662.96

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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.