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Finding the Fourth Proportional to 5,760.76, 8,642.82 and 1,865.08

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Solution

The fourth proportional to 5,760.76, 8,642.82 and 1,865.08 is: 2,798.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.76 : 8,642.82 = 1,865.08 : x
  2. Step 2: Convert to fraction form
    5,760.76/8,642.82 = 1,865.08/x
  3. Step 3: Cross multiply
    5,760.76x = 8,642.82 × 1,865.08
  4. Step 4: Simplify right side
    5,760.76x = 16,119,550.73
  5. Step 5: Solve for x
    x = 16,119,550.73/5,760.76
  6. Step 6: Final answer
    x = 2,798.16

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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.