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Finding the Fourth Proportional to 140,253.31, 193,550.88 and 79,821.03

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Solution

The fourth proportional to 140,253.31, 193,550.88 and 79,821.03 is: 110,153.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,253.31 : 193,550.88 = 79,821.03 : x
  2. Step 2: Convert to fraction form
    140,253.31/193,550.88 = 79,821.03/x
  3. Step 3: Cross multiply
    140,253.31x = 193,550.88 × 79,821.03
  4. Step 4: Simplify right side
    140,253.31x = 15,449,430,599.01
  5. Step 5: Solve for x
    x = 15,449,430,599.01/140,253.31
  6. Step 6: Final answer
    x = 110,153.77

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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.