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Finding the Fourth Proportional to 74,368.74, 111,494.79 and 34,905.54

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Solution

The fourth proportional to 74,368.74, 111,494.79 and 34,905.54 is: 52,330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,368.74 : 111,494.79 = 34,905.54 : x
  2. Step 2: Convert to fraction form
    74,368.74/111,494.79 = 34,905.54/x
  3. Step 3: Cross multiply
    74,368.74x = 111,494.79 × 34,905.54
  4. Step 4: Simplify right side
    74,368.74x = 3,891,785,852.14
  5. Step 5: Solve for x
    x = 3,891,785,852.14/74,368.74
  6. Step 6: Final answer
    x = 52,330.94

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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.