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Finding the Fourth Proportional to 29,805.28, 44,715.12 and 21,057.28

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Solution

The fourth proportional to 29,805.28, 44,715.12 and 21,057.28 is: 31,591.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,805.28 : 44,715.12 = 21,057.28 : x
  2. Step 2: Convert to fraction form
    29,805.28/44,715.12 = 21,057.28/x
  3. Step 3: Cross multiply
    29,805.28x = 44,715.12 × 21,057.28
  4. Step 4: Simplify right side
    29,805.28x = 941,578,802.07
  5. Step 5: Solve for x
    x = 941,578,802.07/29,805.28
  6. Step 6: Final answer
    x = 31,591.01

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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.