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Finding the Fourth Proportional to 279,077.40, 418,616.10 and 92,107.80

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Solution

The fourth proportional to 279,077.40, 418,616.10 and 92,107.80 is: 138,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,077.40 : 418,616.10 = 92,107.80 : x
  2. Step 2: Convert to fraction form
    279,077.40/418,616.10 = 92,107.80/x
  3. Step 3: Cross multiply
    279,077.40x = 418,616.10 × 92,107.80
  4. Step 4: Simplify right side
    279,077.40x = 38,557,808,015.58
  5. Step 5: Solve for x
    x = 38,557,808,015.58/279,077.40
  6. Step 6: Final answer
    x = 138,161.70

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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.