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Finding the Fourth Proportional to 70,133.85, 105,190.65 and 41,687.46

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Solution

The fourth proportional to 70,133.85, 105,190.65 and 41,687.46 is: 62,525.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,133.85 : 105,190.65 = 41,687.46 : x
  2. Step 2: Convert to fraction form
    70,133.85/105,190.65 = 41,687.46/x
  3. Step 3: Cross multiply
    70,133.85x = 105,190.65 × 41,687.46
  4. Step 4: Simplify right side
    70,133.85x = 4,385,131,014.25
  5. Step 5: Solve for x
    x = 4,385,131,014.25/70,133.85
  6. Step 6: Final answer
    x = 62,525.17

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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.