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Finding the Fourth Proportional to 69,775.17, 104,628.21 and 29,787.90

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Solution

The fourth proportional to 69,775.17, 104,628.21 and 29,787.90 is: 44,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,775.17 : 104,628.21 = 29,787.90 : x
  2. Step 2: Convert to fraction form
    69,775.17/104,628.21 = 29,787.90/x
  3. Step 3: Cross multiply
    69,775.17x = 104,628.21 × 29,787.90
  4. Step 4: Simplify right side
    69,775.17x = 3,116,654,741.13
  5. Step 5: Solve for x
    x = 3,116,654,741.13/69,775.17
  6. Step 6: Final answer
    x = 44,667.10

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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.