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Finding the Fourth Proportional to 279,401.14, 419,117.20 and 79,706.16

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Solution

The fourth proportional to 279,401.14, 419,117.20 and 79,706.16 is: 119,563.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,401.14 : 419,117.20 = 79,706.16 : x
  2. Step 2: Convert to fraction form
    279,401.14/419,117.20 = 79,706.16/x
  3. Step 3: Cross multiply
    279,401.14x = 419,117.20 × 79,706.16
  4. Step 4: Simplify right side
    279,401.14x = 33,406,222,601.95
  5. Step 5: Solve for x
    x = 33,406,222,601.95/279,401.14
  6. Step 6: Final answer
    x = 119,563.66

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1.5x scale

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.