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Finding the Fourth Proportional to 34,681.33, 52,020.78 and 9,721.18

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Solution

The fourth proportional to 34,681.33, 52,020.78 and 9,721.18 is: 14,581.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,681.33 : 52,020.78 = 9,721.18 : x
  2. Step 2: Convert to fraction form
    34,681.33/52,020.78 = 9,721.18/x
  3. Step 3: Cross multiply
    34,681.33x = 52,020.78 × 9,721.18
  4. Step 4: Simplify right side
    34,681.33x = 505,703,366.12
  5. Step 5: Solve for x
    x = 505,703,366.12/34,681.33
  6. Step 6: Final answer
    x = 14,581.43

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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.