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Finding the Fourth Proportional to 8,975.01, 12,379.68 and 5,792.34

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Solution

The fourth proportional to 8,975.01, 12,379.68 and 5,792.34 is: 7,989.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.01 : 12,379.68 = 5,792.34 : x
  2. Step 2: Convert to fraction form
    8,975.01/12,379.68 = 5,792.34/x
  3. Step 3: Cross multiply
    8,975.01x = 12,379.68 × 5,792.34
  4. Step 4: Simplify right side
    8,975.01x = 71,707,315.65
  5. Step 5: Solve for x
    x = 71,707,315.65/8,975.01
  6. Step 6: Final answer
    x = 7,989.66

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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.