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Finding the Fourth Proportional to 6,392.05, 8,820.95 and 3,703.64

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Solution

The fourth proportional to 6,392.05, 8,820.95 and 3,703.64 is: 5,110.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.05 : 8,820.95 = 3,703.64 : x
  2. Step 2: Convert to fraction form
    6,392.05/8,820.95 = 3,703.64/x
  3. Step 3: Cross multiply
    6,392.05x = 8,820.95 × 3,703.64
  4. Step 4: Simplify right side
    6,392.05x = 32,669,623.26
  5. Step 5: Solve for x
    x = 32,669,623.26/6,392.05
  6. Step 6: Final answer
    x = 5,110.98

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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.