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Finding the Fourth Proportional to 79,172.16, 118,604.48 and 70,759.68

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Solution

The fourth proportional to 79,172.16, 118,604.48 and 70,759.68 is: 106,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,172.16 : 118,604.48 = 70,759.68 : x
  2. Step 2: Convert to fraction form
    79,172.16/118,604.48 = 70,759.68/x
  3. Step 3: Cross multiply
    79,172.16x = 118,604.48 × 70,759.68
  4. Step 4: Simplify right side
    79,172.16x = 8,392,415,051.37
  5. Step 5: Solve for x
    x = 8,392,415,051.37/79,172.16
  6. Step 6: Final answer
    x = 106,002.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.