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Finding the Fourth Proportional to 6,322.87, 8,726.05 and 3,490.79

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Solution

The fourth proportional to 6,322.87, 8,726.05 and 3,490.79 is: 4,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,322.87 : 8,726.05 = 3,490.79 : x
  2. Step 2: Convert to fraction form
    6,322.87/8,726.05 = 3,490.79/x
  3. Step 3: Cross multiply
    6,322.87x = 8,726.05 × 3,490.79
  4. Step 4: Simplify right side
    6,322.87x = 30,460,821.17
  5. Step 5: Solve for x
    x = 30,460,821.17/6,322.87
  6. Step 6: Final answer
    x = 4,817.56

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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.