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Finding the Fourth Proportional to 10,393.46, 14,343.10 and 5,917.21

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Solution

The fourth proportional to 10,393.46, 14,343.10 and 5,917.21 is: 8,165.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,393.46 : 14,343.10 = 5,917.21 : x
  2. Step 2: Convert to fraction form
    10,393.46/14,343.10 = 5,917.21/x
  3. Step 3: Cross multiply
    10,393.46x = 14,343.10 × 5,917.21
  4. Step 4: Simplify right side
    10,393.46x = 84,871,141.08
  5. Step 5: Solve for x
    x = 84,871,141.08/10,393.46
  6. Step 6: Final answer
    x = 8,165.82

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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.