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Finding the Fourth Proportional to 17,239.40, 23,789.94 and 9,787.40

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Solution

The fourth proportional to 17,239.40, 23,789.94 and 9,787.40 is: 13,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,239.40 : 23,789.94 = 9,787.40 : x
  2. Step 2: Convert to fraction form
    17,239.40/23,789.94 = 9,787.40/x
  3. Step 3: Cross multiply
    17,239.40x = 23,789.94 × 9,787.40
  4. Step 4: Simplify right side
    17,239.40x = 232,841,658.76
  5. Step 5: Solve for x
    x = 232,841,658.76/17,239.40
  6. Step 6: Final answer
    x = 13,506.37

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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.