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Finding the Fourth Proportional to 11,395.56, 15,723.98 and 7,612.65

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Solution

The fourth proportional to 11,395.56, 15,723.98 and 7,612.65 is: 10,504.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,395.56 : 15,723.98 = 7,612.65 : x
  2. Step 2: Convert to fraction form
    11,395.56/15,723.98 = 7,612.65/x
  3. Step 3: Cross multiply
    11,395.56x = 15,723.98 × 7,612.65
  4. Step 4: Simplify right side
    11,395.56x = 119,701,118.28
  5. Step 5: Solve for x
    x = 119,701,118.28/11,395.56
  6. Step 6: Final answer
    x = 10,504.19

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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.