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Finding the Fourth Proportional to 74,608.94, 111,875.40 and 36,660.74

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Solution

The fourth proportional to 74,608.94, 111,875.40 and 36,660.74 is: 54,972.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,608.94 : 111,875.40 = 36,660.74 : x
  2. Step 2: Convert to fraction form
    74,608.94/111,875.40 = 36,660.74/x
  3. Step 3: Cross multiply
    74,608.94x = 111,875.40 × 36,660.74
  4. Step 4: Simplify right side
    74,608.94x = 4,101,434,394.79
  5. Step 5: Solve for x
    x = 4,101,434,394.79/74,608.94
  6. Step 6: Final answer
    x = 54,972.42

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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.