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Finding the Fourth Proportional to 6,703.76, 9,251.76 and 3,720.56

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Solution

The fourth proportional to 6,703.76, 9,251.76 and 3,720.56 is: 5,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,703.76 : 9,251.76 = 3,720.56 : x
  2. Step 2: Convert to fraction form
    6,703.76/9,251.76 = 3,720.56/x
  3. Step 3: Cross multiply
    6,703.76x = 9,251.76 × 3,720.56
  4. Step 4: Simplify right side
    6,703.76x = 34,421,728.19
  5. Step 5: Solve for x
    x = 34,421,728.19/6,703.76
  6. Step 6: Final answer
    x = 5,134.69

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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.