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Finding the Fourth Proportional to 44,661.68, 66,947.12 and 19,715.28

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Solution

The fourth proportional to 44,661.68, 66,947.12 and 19,715.28 is: 29,552.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,661.68 : 66,947.12 = 19,715.28 : x
  2. Step 2: Convert to fraction form
    44,661.68/66,947.12 = 19,715.28/x
  3. Step 3: Cross multiply
    44,661.68x = 66,947.12 × 19,715.28
  4. Step 4: Simplify right side
    44,661.68x = 1,319,881,215.99
  5. Step 5: Solve for x
    x = 1,319,881,215.99/44,661.68
  6. Step 6: Final answer
    x = 29,552.88

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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.