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Finding the Fourth Proportional to 11,361.16, 15,674.05 and 8,384.10

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Solution

The fourth proportional to 11,361.16, 15,674.05 and 8,384.10 is: 11,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.16 : 15,674.05 = 8,384.10 : x
  2. Step 2: Convert to fraction form
    11,361.16/15,674.05 = 8,384.10/x
  3. Step 3: Cross multiply
    11,361.16x = 15,674.05 × 8,384.10
  4. Step 4: Simplify right side
    11,361.16x = 131,412,802.61
  5. Step 5: Solve for x
    x = 131,412,802.61/11,361.16
  6. Step 6: Final answer
    x = 11,566.85

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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.