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Finding the Fourth Proportional to 201,114.90, 301,480.35 and 74,721.30

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Solution

The fourth proportional to 201,114.90, 301,480.35 and 74,721.30 is: 112,010.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,114.90 : 301,480.35 = 74,721.30 : x
  2. Step 2: Convert to fraction form
    201,114.90/301,480.35 = 74,721.30/x
  3. Step 3: Cross multiply
    201,114.90x = 301,480.35 × 74,721.30
  4. Step 4: Simplify right side
    201,114.90x = 22,527,003,676.46
  5. Step 5: Solve for x
    x = 22,527,003,676.46/201,114.90
  6. Step 6: Final answer
    x = 112,010.62

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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.