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Finding the Fourth Proportional to 9,761.64, 14,643.06 and 3,917.49

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Solution

The fourth proportional to 9,761.64, 14,643.06 and 3,917.49 is: 5,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,761.64 : 14,643.06 = 3,917.49 : x
  2. Step 2: Convert to fraction form
    9,761.64/14,643.06 = 3,917.49/x
  3. Step 3: Cross multiply
    9,761.64x = 14,643.06 × 3,917.49
  4. Step 4: Simplify right side
    9,761.64x = 57,364,041.12
  5. Step 5: Solve for x
    x = 57,364,041.12/9,761.64
  6. Step 6: Final answer
    x = 5,876.48

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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.