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Finding the Fourth Proportional to 74,964.42, 112,446.61 and 19,560.42

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Solution

The fourth proportional to 74,964.42, 112,446.61 and 19,560.42 is: 29,340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,964.42 : 112,446.61 = 19,560.42 : x
  2. Step 2: Convert to fraction form
    74,964.42/112,446.61 = 19,560.42/x
  3. Step 3: Cross multiply
    74,964.42x = 112,446.61 × 19,560.42
  4. Step 4: Simplify right side
    74,964.42x = 2,199,502,919.18
  5. Step 5: Solve for x
    x = 2,199,502,919.18/74,964.42
  6. Step 6: Final answer
    x = 29,340.62

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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.