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Finding the Fourth Proportional to 105,175.84, 145,141.56 and 57,429.04

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Solution

The fourth proportional to 105,175.84, 145,141.56 and 57,429.04 is: 79,251.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,175.84 : 145,141.56 = 57,429.04 : x
  2. Step 2: Convert to fraction form
    105,175.84/145,141.56 = 57,429.04/x
  3. Step 3: Cross multiply
    105,175.84x = 145,141.56 × 57,429.04
  4. Step 4: Simplify right side
    105,175.84x = 8,335,340,454.90
  5. Step 5: Solve for x
    x = 8,335,340,454.90/105,175.84
  6. Step 6: Final answer
    x = 79,251.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.