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Finding the Fourth Proportional to 29,326.64, 43,990.22 and 7,139.96

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Solution

The fourth proportional to 29,326.64, 43,990.22 and 7,139.96 is: 10,710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,326.64 : 43,990.22 = 7,139.96 : x
  2. Step 2: Convert to fraction form
    29,326.64/43,990.22 = 7,139.96/x
  3. Step 3: Cross multiply
    29,326.64x = 43,990.22 × 7,139.96
  4. Step 4: Simplify right side
    29,326.64x = 314,088,304.26
  5. Step 5: Solve for x
    x = 314,088,304.26/29,326.64
  6. Step 6: Final answer
    x = 10,710.00

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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.