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Finding the Fourth Proportional to 74,392.90, 111,595.42 and 34,928.48

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Solution

The fourth proportional to 74,392.90, 111,595.42 and 34,928.48 is: 52,395.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,392.90 : 111,595.42 = 34,928.48 : x
  2. Step 2: Convert to fraction form
    74,392.90/111,595.42 = 34,928.48/x
  3. Step 3: Cross multiply
    74,392.90x = 111,595.42 × 34,928.48
  4. Step 4: Simplify right side
    74,392.90x = 3,897,858,718.21
  5. Step 5: Solve for x
    x = 3,897,858,718.21/74,392.90
  6. Step 6: Final answer
    x = 52,395.58

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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.