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Finding the Fourth Proportional to 5,918.79, 8,879.58 and 1,758.83

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Solution

The fourth proportional to 5,918.79, 8,879.58 and 1,758.83 is: 2,638.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.79 : 8,879.58 = 1,758.83 : x
  2. Step 2: Convert to fraction form
    5,918.79/8,879.58 = 1,758.83/x
  3. Step 3: Cross multiply
    5,918.79x = 8,879.58 × 1,758.83
  4. Step 4: Simplify right side
    5,918.79x = 15,617,662.90
  5. Step 5: Solve for x
    x = 15,617,662.90/5,918.79
  6. Step 6: Final answer
    x = 2,638.66

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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.