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Finding the Fourth Proportional to 6,703.20, 10,054.80 and 3,931.20

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Solution

The fourth proportional to 6,703.20, 10,054.80 and 3,931.20 is: 5,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,703.20 : 10,054.80 = 3,931.20 : x
  2. Step 2: Convert to fraction form
    6,703.20/10,054.80 = 3,931.20/x
  3. Step 3: Cross multiply
    6,703.20x = 10,054.80 × 3,931.20
  4. Step 4: Simplify right side
    6,703.20x = 39,527,429.76
  5. Step 5: Solve for x
    x = 39,527,429.76/6,703.20
  6. Step 6: Final answer
    x = 5,896.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.