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Finding the Fourth Proportional to 74,660.36, 111,990.34 and 61,484.90

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Solution

The fourth proportional to 74,660.36, 111,990.34 and 61,484.90 is: 92,227.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.36 : 111,990.34 = 61,484.90 : x
  2. Step 2: Convert to fraction form
    74,660.36/111,990.34 = 61,484.90/x
  3. Step 3: Cross multiply
    74,660.36x = 111,990.34 × 61,484.90
  4. Step 4: Simplify right side
    74,660.36x = 6,885,714,982.13
  5. Step 5: Solve for x
    x = 6,885,714,982.13/74,660.36
  6. Step 6: Final answer
    x = 92,227.18

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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.