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Finding the Fourth Proportional to 74,618.84, 111,933.30 and 27,870.68

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Solution

The fourth proportional to 74,618.84, 111,933.30 and 27,870.68 is: 41,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,618.84 : 111,933.30 = 27,870.68 : x
  2. Step 2: Convert to fraction form
    74,618.84/111,933.30 = 27,870.68/x
  3. Step 3: Cross multiply
    74,618.84x = 111,933.30 × 27,870.68
  4. Step 4: Simplify right side
    74,618.84x = 3,119,657,185.64
  5. Step 5: Solve for x
    x = 3,119,657,185.64/74,618.84
  6. Step 6: Final answer
    x = 41,807.90

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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.