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Finding the Fourth Proportional to 111,127.84, 153,197 and 79,241.44

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Solution

The fourth proportional to 111,127.84, 153,197 and 79,241.44 is: 109,239.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,127.84 : 153,197 = 79,241.44 : x
  2. Step 2: Convert to fraction form
    111,127.84/153,197 = 79,241.44/x
  3. Step 3: Cross multiply
    111,127.84x = 153,197 × 79,241.44
  4. Step 4: Simplify right side
    111,127.84x = 12,139,550,883.68
  5. Step 5: Solve for x
    x = 12,139,550,883.68/111,127.84
  6. Step 6: Final answer
    x = 109,239.51

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1.5x scale

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.