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Finding the Fourth Proportional to 5,916.64, 8,162.16 and 5,245.12

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Solution

The fourth proportional to 5,916.64, 8,162.16 and 5,245.12 is: 7,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,916.64 : 8,162.16 = 5,245.12 : x
  2. Step 2: Convert to fraction form
    5,916.64/8,162.16 = 5,245.12/x
  3. Step 3: Cross multiply
    5,916.64x = 8,162.16 × 5,245.12
  4. Step 4: Simplify right side
    5,916.64x = 42,811,508.66
  5. Step 5: Solve for x
    x = 42,811,508.66/5,916.64
  6. Step 6: Final answer
    x = 7,235.78

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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.