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Finding the Fourth Proportional to 5,888.13, 8,121.53 and 3,998.65

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Solution

The fourth proportional to 5,888.13, 8,121.53 and 3,998.65 is: 5,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,888.13 : 8,121.53 = 3,998.65 : x
  2. Step 2: Convert to fraction form
    5,888.13/8,121.53 = 3,998.65/x
  3. Step 3: Cross multiply
    5,888.13x = 8,121.53 × 3,998.65
  4. Step 4: Simplify right side
    5,888.13x = 32,475,155.93
  5. Step 5: Solve for x
    x = 32,475,155.93/5,888.13
  6. Step 6: Final answer
    x = 5,515.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.