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Finding the Fourth Proportional to 22,510.30, 33,720.90 and 19,740.10

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Solution

The fourth proportional to 22,510.30, 33,720.90 and 19,740.10 is: 29,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,510.30 : 33,720.90 = 19,740.10 : x
  2. Step 2: Convert to fraction form
    22,510.30/33,720.90 = 19,740.10/x
  3. Step 3: Cross multiply
    22,510.30x = 33,720.90 × 19,740.10
  4. Step 4: Simplify right side
    22,510.30x = 665,653,938.09
  5. Step 5: Solve for x
    x = 665,653,938.09/22,510.30
  6. Step 6: Final answer
    x = 29,571.08

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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.