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Finding the Fourth Proportional to 153,863.80, 230,666.10 and 79,991.80

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Solution

The fourth proportional to 153,863.80, 230,666.10 and 79,991.80 is: 119,920.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,863.80 : 230,666.10 = 79,991.80 : x
  2. Step 2: Convert to fraction form
    153,863.80/230,666.10 = 79,991.80/x
  3. Step 3: Cross multiply
    153,863.80x = 230,666.10 × 79,991.80
  4. Step 4: Simplify right side
    153,863.80x = 18,451,396,537.98
  5. Step 5: Solve for x
    x = 18,451,396,537.98/153,863.80
  6. Step 6: Final answer
    x = 119,920.32

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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.