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Finding the Fourth Proportional to 74,966.79, 112,450.20 and 19,562.79

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Solution

The fourth proportional to 74,966.79, 112,450.20 and 19,562.79 is: 29,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,966.79 : 112,450.20 = 19,562.79 : x
  2. Step 2: Convert to fraction form
    74,966.79/112,450.20 = 19,562.79/x
  3. Step 3: Cross multiply
    74,966.79x = 112,450.20 × 19,562.79
  4. Step 4: Simplify right side
    74,966.79x = 2,199,839,648.06
  5. Step 5: Solve for x
    x = 2,199,839,648.06/74,966.79
  6. Step 6: Final answer
    x = 29,344.19

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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.