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Finding the Fourth Proportional to 104,991.84, 144,888.12 and 57,245.04

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Solution

The fourth proportional to 104,991.84, 144,888.12 and 57,245.04 is: 78,997.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,991.84 : 144,888.12 = 57,245.04 : x
  2. Step 2: Convert to fraction form
    104,991.84/144,888.12 = 57,245.04/x
  3. Step 3: Cross multiply
    104,991.84x = 144,888.12 × 57,245.04
  4. Step 4: Simplify right side
    104,991.84x = 8,294,126,224.92
  5. Step 5: Solve for x
    x = 8,294,126,224.92/104,991.84
  6. Step 6: Final answer
    x = 78,997.82

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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.