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Finding the Fourth Proportional to 674,693.20, 1,012,153.20 and 201,426.40

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Solution

The fourth proportional to 674,693.20, 1,012,153.20 and 201,426.40 is: 302,173.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,693.20 : 1,012,153.20 = 201,426.40 : x
  2. Step 2: Convert to fraction form
    674,693.20/1,012,153.20 = 201,426.40/x
  3. Step 3: Cross multiply
    674,693.20x = 1,012,153.20 × 201,426.40
  4. Step 4: Simplify right side
    674,693.20x = 203,874,375,324.48
  5. Step 5: Solve for x
    x = 203,874,375,324.48/674,693.20
  6. Step 6: Final answer
    x = 302,173.46

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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.