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Finding the Fourth Proportional to 19,359.90, 29,052.78 and 7,047.90

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Solution

The fourth proportional to 19,359.90, 29,052.78 and 7,047.90 is: 10,576.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.90 : 29,052.78 = 7,047.90 : x
  2. Step 2: Convert to fraction form
    19,359.90/29,052.78 = 7,047.90/x
  3. Step 3: Cross multiply
    19,359.90x = 29,052.78 × 7,047.90
  4. Step 4: Simplify right side
    19,359.90x = 204,761,088.16
  5. Step 5: Solve for x
    x = 204,761,088.16/19,359.90
  6. Step 6: Final answer
    x = 10,576.56

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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.